Comprehensive determinants of health service utilisation for mental health reasons in a canadian catchment area
International Journal for Equity in Health volume 11, Article number: 20 (2012)
This study sought to identify factors associated with health service utilisation by individuals with mental disorders in a Canadian catchment area.
To be included in the study, participants had to be aged between 15 and 65 and reside in the study location. Data was collected randomly from June to December 2009 by specially trained interviewers. A comprehensive set of variables (including geospatial factors) was studied using the Andersen's behavioural health service model. Univariate, bivariate, and multivariate analyses were carried out.
Among 406 individuals diagnosed with mental disorders, 212 reported using a mental health service at least once in the 12 months preceding the interviews. Emotional problems and a history of violence victimisation were most strongly associated with such utilisation. Participants who were middle-aged or deemed their mental health to be poor were also more likely to seek mental healthcare. Individuals living in neighbourhoods where rental accommodations were the norm used significantly fewer health services than individuals residing in neighbourhoods where homeownership was preponderant; males were also less likely to use services than females.
Our study broke new ground by uncovering the impact of longstanding violence victimisation, and the proportion of homeownership on mental health service utilisation among this population. It also confirmed the prominence of some variables (gender, age, emotional problems and self-perceived mental health) as key enabling variables of health-seeking. There should be better promotion of strategies designed to change the attitudes of males and youths and to deal with violence victimisation. There is also a need for initiatives that are targeted to neighbourhoods where there is more rental housing.
Mental disorders are among the leading causes of morbidity worldwide. In Canada and the United States, depression is the primary source of occupational disability [1–3]. Improving the efficiency of the mental healthcare system, particularly service utilisation, is a priority. According to epidemiological studies, an exceedingly high proportion of individuals with mental disorders do not seek professional help despite the availability of effective treatment [4–9]. A recent meta-analysis of 27 studies found that 26% of Europeans sought healthcare for a mental disorder in a 12-month period . Another study, comparing 17 countries, revealed that, in the 10 countries with the highest per-capita income, between 13% and 61% of individuals, depending on the severity of their mental disorders, received health services [11, 12]. According to the 2002 Canadian Community Health Survey of Mental Health and Well-Being (CCHS 1.2), only 39% of Canadians used services for mental health reasons . These findings suggest that mental health systems must identify individuals who need care more effectively, and remove clinical and societal barriers to health services.
The most frequently employed tool for identifying factors associated with health service use is the Behavioural Model of Health Service Use . It has been applied to health surveys [15–18] of the general population and mental health studies [9, 19–22]. It has also served in studies of older patients with psychiatric problems [23–26], patients with severe mental disorders [27–29], and patients with concurrent problems such as homelessness, substance abuse or violence [30–33].
The Behavioural Model of Health Service Use encompasses individual and contextual dimensions. It classifies predictors of service use into three categories: predisposing, enabling, and needs-related factors. Predisposing factors are individual characteristics that exist prior to the illness (for example, socio-demographic profile, attitudes and values, and knowledge about services). Enabling factors refer to various features that influence care delivery and attitudes toward care; they encompass variables such as income, social support, and availability of care. Finally, needs-related factors include physical and mental health assessment by patients and professionals, for example, illness, symptom severity, perceived needs, and impairment requiring services.
In general, needs-related factors are most closely associated with health service utilisation. Reportedly, several needs-related factors have significant effects on the use of health services: diagnoses of schizophrenia, serious depression , and social anxiety behaviour .
Among predisposing factors, age, gender, marital status, education, country of birth, and race/ethnicity are significant determinants of service utilisation among individuals with mental disorders. Several studies have found that younger (18-24) and older (65 and up) individuals were less likely to use services than participants aged 25 to 64 [8, 34, 35]. Females were the most frequent users of health services, principally of general practitioners; men were more likely to seek specialised services [2, 29, 34, 36–39]. Studies have found that persons who were previously or currently married used services more often than bachelors [2, 8, 40, 41]. Individuals with more education [2, 34] also used health services significantly more often than less-educated persons, despite the higher incidence of mental disorder among the latter . With regard to country of birth, race and ethnicity, studies found that Whites are more likely to use health services than Blacks or immigrants [2, 30, 33, 43]. Attitudes and beliefs regarding mental health and treatment and knowledge also played a role in service use. High rates of health service use have been found among individuals who consider their mental health to be poor  and maternal history of mental illness .
Among enabling factors, perceived barriers to accessibility to care were negatively associated with service utilisation . Individuals with more elevated socio-economic status tended to use specialised services more assiduously, particularly psychiatric and psychological care, even among individuals with the same insurance coverage [2, 44–46]. Family and social support can be positively or negatively associated with service utilisation [29, 47, 48]. Some social networks helped individuals to recognise their problems and seek aid from health providers; other networks tended not to encourage members to seek help, thereby constituting a barrier to accessibility . Professional support also played a role [31, 50]. Access to a regular source of medical care was positively associated with service utilisation .
If previous studies have found several variables associated with health service utilisation for mental health reasons, some variables such as religious beliefs, neighbourhood/geospatial information, involvement in the justice system, impulsivity, and lifetime of aggressive behavior and violence, have received little or no attention in the literature to our knowledge. Some studies have found that churches were a significant factor of social integration in certain communities, and that church involvement was negatively associated with depressive symptoms. Concerning neighbourhood/geographical variables, living in socio-economically deprived areas or socially disorganised neighbourhoods was associated with psychosocial stress and higher incidence of depressive symptoms . Finally, past or present experiences of violence, crime or imprisonment were all associated with higher prevalence of mental disorders  or emotional problems [53, 54]. Those variables that were positively or negatively associated with the prevalence of mental disorders could also play a role in health service utilisation for mental health reasons.
This study sought to identify factors of health service utilisation among individuals diagnosed with a mental disorder in a 12-month period within a Canadian urban catchment area of 258,000 inhabitants. A comprehensive set of variables comprising geospatial factors was analysed using the Andersen's behavioural model , which posits that health service use is determined by predisposing, enabling, and needs-related factors. We hypothesised that some novel variables associated with the prevalence of mental disorders in the general population (e.g. neighbourhood or geospatial data, involvement in the justice system), based on a holistic set of variables, could also play a role in health service utilisation.
Study design and setting
This study focused on a catchment area in the south-western sector of Montreal, Canada with a population of 258,000. The area encompasses a diverse mix of residents as well as a broad range of social structures, socio-economic status, education, availability of health services, neighbourhood dynamics, and levels of security.
The study area included six neighbourhoods ranging in population from 29,205 to 72,4200 . Immigrants represented 17% of the population (as compared with 26% in Montreal). The proportion of low-income households was 36% (as compared with 23% in the province of Quebec and 35% in Montreal). Low-income households were located mainly in two of the four neighbourhoods where nearly half of residents are low-income earners. Previous studies revealed a high incidence of psychological distress in low-income populations at this location . Mental health services are chiefly delivered by three organisations: two health and social service centres (created through the merger of a general hospital, community local service centres, and nursing homes) that provide first-line (basic bio-psycho-social services offered to the population with common mental disorders) and second-line (specialized services) health services. A psychiatric hospital delivers second- and third-line services (ultra-specialized for individuals who present highly complex health problems). Sixteen community-based agencies offering mental health services were also present; they provided numerous services (for example, a crisis centre, day centres, self-help groups, back-to-work programs) to individuals with mental disorders or their relatives. General practitioners and psychologists in private clinics completed the mental health offer in this area.
Selection criteria and sample
To be included in the survey, participants had to be aged from 15 to 65 and be residents of the target area. The objective was to obtain a representative sample of the targeted population, both geographically, i.e. recruiting participants across the area, as well as in proportion to the population density and in terms of socio-economic status (SES), that is, representative of the educational attainment profile of the area. A target sample of 3,708 addresses was selected for recruitment. Participants were first contacted by phone, and 300 individuals were recruited. It was soon decided, however, to proceed otherwise due to the low response rate compared to the number of potential participants who were randomly selected. In order to improve recruitment, 13 nearby addresses were added to each address that was originally selected. This range of 14 potential addresses thus included the original address, the three addresses that were the closest on each side, and the seven addresses on the opposite side of the street. We used 3,408 addresses for door-to-door recruitment; the 3,408 original addresses hence resulted in 3,408*14 nearby addresses, theoretically representing 47,712 potential addresses where individuals would be available for recruitment. The recruiters met 7,265 individuals in person and, from those, 3,726 (51%) refused to participate. Amongst the 3,539 individuals who accepted to participate, 1,405 (19%) were not eligible; 2,134 participants completed the interview for a response rate of 49%. The response rate is superior to the median rates reported in epidemiological studies of populations conducted in the years since 2000, when there had been a steady decline in participation rates over the past 30 years [56, 57].
The sample was equally distributed in the study area among the various neighbourhoods. Data was collected randomly from June to December 2009 by specially trained interviewers. Only one person per target household was selected using procedures and criteria contained in the National Population Health Survey. For purposes of recruitment, the interviewers had phone contacts with individuals who agreed to participate in the study within the week during which they were recruited, in order to schedule a face-to-face meeting either at the participant's home or in an office designated for that purpose at the psychiatric hospital. Most interviews, however, were conducted at the participant's home. The face-to-face interview was conducted once a consent form was signed, and lasted from a minute and a half to three hours depending on whether a mental disorder was detected or not. Interviewers used portable computers. The research was approved by relevant ethics boards.
A randomly selected sample of 2,434 individuals took part of the survey. Women were overrepresented (62%) in the final study sample, compared to the reference population (52%); men under the age of 45 were underrepresented. To ensure a precise prediction of the prevalence of mental illness in the population, we weighted the data for sex and age. The mean age was 40,72 (ET = 14,08). The make-up of respondents was as follows: 49% were men, 38% were single, 45% were married or in a relationship, 12% were divorced or separated, and 71% had a post-secondary diploma; 79% were employed in the last 12 months and 25% were immigrants; French was the primary language spoken by 54% of the respondents, followed by English as the primary language for 22%; Whites accounted for 81% of the sample. The average personal income was $31,192 CAD (sd-33) and the average family income $59,056 CAD (sd = $49,851); 33% of the respondents were considered as having a low income and 67% had extremely low or no income. Among the 2,434 individuals who took part in the survey, 406 had experienced at least one episode of mental health disorder in the 12 months preceding the interview, and were selected for the analyses described below.
Variables and measurement instruments
Variables assessed in this study are displayed in Table 1 and categorised according to the behavioural model . Instruments used to measure specific health and psychosocial parameters are described in Table 2.
The dependent variable refers to 'individuals diagnosed with mental disorders in the previous 12 months who have used health services due to mental health problems.' Participants who were diagnosed as having at least one mental disorder were invited to identify services that they used to deal with their condition. Individuals had one of the following diagnoses: major depressive disorder, mania, social phobia, agoraphobia, panic disorder, post-traumatic stress disorder, or alcohol and drug dependence. Mental disorders were identified with the CCHS 1.2 version of the Composite International Diagnostic Interview (CIDI) , used in the Global Survey on Mental Health (WMH, 2000). This is a diagnostic tool that generates psychiatric diagnoses according to the definitions and criteria of ICD 10 and DSM IV. Alcohol and drug dependency were assessed using a short form of the CIDI (based upon the DSM-III-R criteria). Previous versions of the CIDI have demonstrated reliability and validity . The questionnaire on the use of mental health services was also adapted from the CCHS 1.2. Health services refer to one of the following services or professionals: hospital bed, rehabilitation centre, psychologist, general practitioner, psychiatrist, case manager, toxicologist, nurse, social worker, psychotherapist, pharmacist, support group, telephone support, or other health professionals. At least one of the above consultations in the previous 12 months was considered as use of mental health services.
Predisposing factors included socio-demographic variables (age, gender, marital status, household composition and size, education, first language, country of birth), religious beliefs (importance attributed to spirituality and frequency of participation in religious activities), health beliefs (quality of life, self-perception of mental and physical health), knowledge (parental psychiatric history) and justice system (history of imprisonment). Enabling factors included variables associated with income (personal, household and main source), territory, social support, social stigmatisation and spatial variables of the social and built characteristics of the local residential area. A geographic information system was used to compute proximity to the closest health service, and measures of local area socio-economic statues (SES). Proximity measures were obtained by calculating the traveling distance between a participant's home and the closest health service, either using pedestrian roads or the motor vehicle network. Measures of area social composition, obtained from the 2006 Census at the dissemination area level, were re-compiled for each participant's local residential area using ego-centered circular buffers of 500 metres . Such ego-centered methods, providing individualised measures of local areas, make it possible to use environmental predictors in classical regression models at the individual level. Measures of local area SES included the following: proportion of renters and recent movers, unemployment rate, active population level, household income and number of recent immigrants. Finally, needs-related factors included the number of mental disorders diagnosed in the 12 months preceding the interview: psychological distress, impulsiveness, and emotional problems as well as longstanding violence victimisation and longstanding aggressive behaviour.
Univariate, bivariate, and multivariate analyses were carried out. Univariate analyses entailed the calculation of the frequency distribution for categorical variables and mean values for continuous variables. In bivariate analyses, a single logistic regression was used to assess variables associated with health service utilisation in the 12 months prior to the interview, with the Alpha value set at P < 0.10. Variables that yielded a significant association in bivariate analyses were introduced into the multiple model through the application of the backward likelihood ratio elimination technique , with the Alpha value set at P < 0.05. The Hosmer-Lemeshow test was applied to assess the model goodness-of-fit and a Nagelkerke R square was generated to express the proportion of variance explained by the model.
Among the 406 individuals who have experienced at least one episode of mental health disorder in the 12 months preceding the interview and were selected for the analyses described below, 212 (52%) reported at least one occurrence of health service use.
The distribution characteristics of the 406 participants are displayed in Tables 3 and 4. The sample was 56% female. The mean age was 39 (SD: 13.1). Eighty-one percent were Canadian-born. Mental and physical health was deemed to be very good or excellent, respectively, by 24% and 27% of participants. Approximately half (51%) reported that they were satisfied or very satisfied with their lives. Almost half was employed (45%). Only 13% reported receiving social assistance. The mean household income was $43,650 CAD (SD: $38,179; Minimum: 0; Maximum: $228,000.00). The mean score for quality of life was 94.7 (SD: 18.2; Minimum: 26; Maximum: 131). The three mental health disorders most frequently reported were major depressive episode (52%), alcohol dependence (24%), and social phobia (20%). More than half (57%) of the participants reported having experienced emotional problems in the 12 months before the interview. Forty-nine percent declared being lifetime victims of violence, and 47% had a history of aggressive behaviour.
The distribution characteristics of the 212 participants who used health services are also displayed in Tables 3 and 4. Individuals who used health services were more often female and dissatisfied or highly dissatisfied with their quality of life; in addition, they deemed their mental and physical health to be fair or poor. These individuals also tended to be longstanding victims of violence or had a long history of aggressive behaviour. Compared with the sample of 406 as a whole, individuals who used health services also had more frequent emotional problems, serious depressive episodes or agoraphobia in the last 12 months.
Variables significantly associated with service utilisation in bivariate analyses are displayed in Table 5. Bivariate linear analyses yielded five predisposing, four enabling, and three needs-related variables significantly associated with health service use.
The multiple logistic regression model built using these variables and the backward elimination technique retained six variables. Variables associated with needs-related factors were the most strongly correlated variables in the model. Participants who reported emotional problems in the 12 months before the interview had a four-fold probability increase in health service use. Those who reported being longstanding victims of violence were twice as likely to use services. Among predisposing factors, perception of mental health, gender, and age emerged, with age as the most strongly associated variable in this category: older participants were more likely than younger participants to use services. Individuals who view their mental health as poor were 73% more likely to use services. Female participants were 49% more likely to use services. Finally, among enabling factors, only one variable was associated, negatively, with health service utilisation: proportion of rental housing. Individuals living in neighbourhoods where renters outnumber homeowners used fewer health services. The model's goodness-of-fit was very adequate, as shown by the Hosmer-Lemeshow test, with 34% variance expressed.
This study aimed to assess variables associated with health service utilisation by individuals diagnosed with mental disorders within a 12-month period in an urban setting in Montreal, Canada. Using the Andersen's behavioural model as a guide, a holistic set of variables categorised into the following domains was taken into consideration: predisposing, enabling, needs-related (independent variables), and service utilisation (dependent variable). To the most salient variables associated with health services utilisation according to the literature, we have added some novel variables (e.g., involvement in the justice system, neighbourhood and geospatial data), and hypothesised that some of these could also play a role in health services utilisation for mental health reasons.
Interestingly, roughly half of the 406 individuals who experienced a mental disorder in the past year self-rated their mental health as good and said they were highly satisfied with their life. Individuals who used health services had a worse perception of their mental health and lower life satisfaction, compared to individuals who didn't use health services. It is impossible to say, however, if the former truly have better mental health or if they underestimate their mental health problems.
Most studies have shown that about 33% of individuals with mental disorders used health services to treat their condition [78, 79]. In our study, almost 50% of individuals diagnosed with mental disorders in the 12 past months did not seek professional help for their problems, despite universal healthcare access. It may be that most individuals used mental health services only when they believe that their disorders were severe, chronic or disabling or when they thought that professionals could significantly help them . The proximity of a psychiatric hospital may explain the observed increased use of health services in the catchment area. Usually, individuals with mental disorders tend to live near their treatment centre. Furthermore, needs are more numerous in deprived urban areas [81, 82]. Another reason why our study showed a higher number of users could be that, inversely to other studies [78, 79], ours included only individuals aged between 15 and 65 years old. Individuals over 65 years are less likely to use services than middle-aged individuals [8, 34, 35].
In accordance with the Andersen's theory, needs-related factors were the prime predictors of health service utilisation in our study . The close association between emotional problems and service use could be linked to the pain experienced by individuals who recognise their emotional problems, leading them to seek professional help. Emotional problems are often linked in studies with interpersonal relationships . According to Caron and colleagues, lack of emotional support and presence of persons perceived as stressful are the most significant predictors of psychological distress . Some studies found an association between marital distress and mental health service use [83, 85, 86]. While marital concord is consistent with healthy sleep habits, fewer signs of depression, and fewer visits to the doctor's office, conjugal discord raises the risk of mental and physical dysfunction . The loss of a relationship and the resulting social isolation has been shown to increase the use of health services by those who are separated, divorced or widowed [8, 40, 41].
With regard to longstanding victims of violence, several studies have revealed that exposure to violence intensifies stress and gives rise to feelings of vulnerability, thereby increasing the risk of developing mental disorders [52, 87, 88], and the subjective sense of having emotional problems . Females who are victims both of physical and sexual violence are up to 14 times more likely to develop post-traumatic stress disorder, and five to eight times more likely to experience a serious depressive episode than females who have not been exposed to violence . Furthermore, having a mental disorder increases the risk of exposure to violence. Victimisation is especially prevalent among individuals with serious mental disorders. Depending on the type of violent crime, the risk of the latter being a crime victim is six to twenty-three times greater than among the general population . Psychiatric surveys do not usually show the percentage of individuals who are lifetime victims of violence; consequently, that variable is not analysed in studies on service use with respect to mental disorders. It wasn't possible to ascertain, however, if victims of violence were over represented in our sample.
With regards to predisposing factors, our results were consistent with previous findings that females were more likely to use health services [2, 29, 36, 38]. However, women's greater propensity for using health services is not associated with a greater prevalence of mental disorder among them. In Quebec, the suicide rate among men is nearly four times greater than among women; in addition, substance-related disorders are significantly more frequent among men . According to several authors, females have a greater facility for identifying and accepting mental health diagnoses, which may account for their more frequent use of mental health services [7, 38].
The association between age and health service utilisation has been frequently noted in the literature [2, 8, 29, 35, 89]. In our sample, the mean age was roundly 39 years old (SD 13.1); participants were thus predominantly middle-aged. According to studies, these individuals were more likely to use services than those under 25 and those over 65 [8, 34, 35]. Younger adults tend not to perceive their need for treatment, and often prefer to solve problems by themselves . They are also more likely to drop out of treatment . Conversely, older individuals with mental disorders usually present more stable conditions, which may explain their preference for general practitioners as the main providers of health services . The fear of stigmatisation may also contribute to lower health service use among young adults, and persons aged over 65 years old as compared with individuals in between .
The association between poor self-perception of mental health and health service use is evident. The failure to recognise a problem is a serious obstacle to health service access . Accepting the need for mental health may be a challenge for individuals who are shy or who have high self-esteem . Self-perception with regard to mental health or attitudes toward health services may account for differences between males and females . Males are usually more reluctant to recognise their emotional or mental problems  and take longer to seek help [7, 37].
The only enabling variable associated with health service use within a neighbourhood was the ratio of renters to homeowners. Neighbourhoods with more rental housing may be characterised by weaker residential stability. Conversely, homeowners may feel a greater sense of belonging to their neighbourhood. As they are less likely to move than renters, homeowners probably possess a better understanding of health services in their neighbourhood and may even have used them regularly for a long period. Moreover, residential stability fosters the development of stronger ties with neighbours that can help individuals to identify their problems and determine what to do to resolve them [49, 52]. Perhaps, neighbourhoods with a larger proportion of homeowners also enjoy higher per-capita income. Individuals with higher socio-economic status have access to a greater range of resources , such as private psychologists whose services are not covered by the public healthcare insurance system in Quebec.
This study has some limitations. First, it did not include the full spectrum of psychiatric disorders, for example, schizophrenia and other serious mental disorders, organic mental disorders, sexual disorders, eating disorders, personality disorders or intellectual deficiencies. Individuals with severe mental disorders have been heavy service users [91–93]. Second, we did not take into account the severity of mental disorder. Previous studies have reported that severe cases were associated with more intensive service use than mildly severe or moderate cases [11, 12]. Third, we didn't have information about the duration of, or access to health service use. According to Leaf and colleagues, health service use is associated with having a regular source of medical care . Long delays between the onset of disease and first contact with a health provider represent a significant obstacle to health service use . Fourth, the observed correlations between health service use and the diverse variables didn't imply causality. Finally, the value of this study may be limited to information regarding the specific city or the specific catchment area that was investigated.
The present study is of interest as it analysed a comprehensive set of variables, including geospatial factors. To our knowledge, no previous study has focused on such numerous variables using the Andersen behavioural model. This catchment area study also made an original contribution by targeting individuals diagnosed with mental disorders exclusively as against much of the literature which focuses on the general population.
As reported in previous studies, an unusually high proportion of individuals with mental disorders did not use health services. If decision-makers and practitioners are to improve the efficacy of the mental health system, they must gain a better understanding of factors that drive the utilisation or non-utilisation of services. This study broke new ground by uncovering the importance of two novels variables (longstanding violence victimisation, and the proportion of homeownership), associated with health service use among individuals with mental disorders. Stress and pain caused by needs-related factor or health belief variable (longstanding violence victimisation, emotional problems, self-perceived mental health) may lead individuals to seek health services for mental health reasons. In addition, targeting neighbourhoods with high proportion of rental accommodations could be a public health priority to improve service utilization and mental health. Finally, as reported in previous research, age and gender were associated with health service use. Males and youths used significantly fewer mental health services than females and middle-aged individuals. Accordingly, strategies aimed at changing attitudes among males and youths should be promoted. Globally, this study encourages the reinforcement of public education, and services designed especially to target populations (youths and males, rental housing neighbourhoods), in view of helping individuals with mental disorders or reducing their reluctance to seek health services.
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The study was funded by the Canadian Institute of Health Research (CIHR). We would like to thank this grant agency, and all the individuals who participated in the research.
The authors declare that they have no competing interests.
MJF, GG and MP designed the study. JMB carried out the statistical analyses with assistance from JC directing the full catchment area study. MJF and GG wrote the article. YK built the geospatial data-bank used in the study, and helped to write the methodological section. All authors have read and approved the final manuscript.
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Fleury, MJ., Grenier, G., Bamvita, JM. et al. Comprehensive determinants of health service utilisation for mental health reasons in a canadian catchment area. Int J Equity Health 11, 20 (2012). https://doi.org/10.1186/1475-9276-11-20
- Mental disorders
- Emotional problems
- Longstanding violence victimisation
- Health service utilization