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Table 1 Description of the variables

From: Socioeconomic inequalities in HIV/AIDS prevalence in sub-Saharan African countries: evidence from the Demographic Health Surveys

Variables Description
Outcome variable  
HIV/AIDS 1 = if the individual is HIV-positive, 0 otherwise
Demographic variables  
 Age  
    15-20 1 = if male aged 15-19 years, 0 otherwise
    20-29 1 = if male aged 20-29 years, 0 otherwise
    30-39 1 = if male aged 30-39 years, 0 otherwise
    40-49 (Ref.) 1 = if male aged 40-49 years, 0 otherwise
 Gender  
Male (Ref.) 1 = if male, 0 otherwise
Female 1 = if female, 0 otherwise
 Marital status  
    Married (Ref.) 1 = if the individual is married, 0 otherwise
    Separated/divorced/widowed 1 = if the individual is separated/divorced/widowed, 0 otherwise
    Never married 1 = if the individual is never married, 0 otherwise
Socioeconomic variables  
 Standard of living  
    Wealth index Normalized wealth score on a scale of 0-100
 Education level  
    None (Ref.) 1 = if the individual has no education, 0 otherwise
    Primary 1 = if the individual has primary education, 0 otherwise
    Secondary and above 1 = if the individual has secondary and above education, 0 otherwise
 Occupation type  
     Agriculture (Ref.) 1 = if the individual’s occupation is agriculture, 0 otherwise
    White-collar 1 = if the individual is employed in occupations such as management, and office/service, 0 otherwise
    Blue-collar 1 = if the individual is employed in manual work, 0 otherwise
    Other occupations 1 = if the individual is employed in other occupations such as trade and domestic, 0 otherwise
    Unemployed 1 = if the individual is unemployed, 0 otherwise
Behavioural variables  
 Number of sex partners Number of sex partners the individual, excluding spouse, has in last 12 months.
 Age at first sex  
    Never had sex 1 = if the individual never had sex, 0 otherwise
    <16 1 = if the individual had sex before the age of 16, 0 otherwise
    16-17 1 = if the individual had sex in ages 16 and 17, 0 otherwise
    18-19 1 = if the individual had sex in ages 18 and 19, 0 otherwise
    20 and above (Ref.) 1 = if the individual had sex after the age of 19, 0 otherwise
Ecological variable  
 Geographical area  
    Urban 1 = if the individual resides in urban area, 0 otherwise
    Rural (Ref.) 1 = if the individual resides in rural area, 0 otherwise