Table 1 Selected Variables
From: Socioeconomic inequalities in self-perceived oral health among adults in Chile
Variable | Definition |
|---|---|
Dependent variable | |
 OHIP-14 score | Self-rated oral-health related quality of life (0 to 56; higher scores indicate a worse perceived oral health status) |
Independent variables | |
Socioeconomic and demographic characteristics | |
 Sex | Sex: male = 1 and female = 0 |
 Age | Participant’s age in years at the time of the baseline survey |
  18–30 | Age between 18 and 30 years: yes = 1 and no = 0 |
  31–40 | Age between 31 and 40 years: yes = 1 and no = 0 |
  41–50 | Age between 41 and 50 years: yes = 1 and no = 0 |
  51–61 | Age between 51 and 61 years: yes = 1 and no = 0 |
 Head of household | Whether participant is head of his/her household: yes = 1 and no = 0 |
 Married/partner | Marital status of participant (married or living with partner): yes = 1 and no = 0 |
 Children under 5 | Number of children under age 5 living in the household |
 Children aged 5–18 | Number of children between ages 5 and 18 living in the household |
 Education | Highest educational level attained by participant |
  Middle or less | 8th grade or less: yes = 1 and no = 0 |
  Incomplete secondary school | Between 8th and 11th grade: yes = 1 and no = 0 |
  Complete secondary school | 12th grade: yes = 1 and no = 0 |
  Higher Education | At least some higher education: yes = 1 and no = 0 |
 Employed full time | Participant works full time: yes = 1 and no = 0 |
 Employed part time | Participant works part time: yes = 1 and no = 0 |
 Healthcare system | Health plan within the Public Insurance system |
  Public Insurance A (most vulnerable) | Public insurance plan A: yes = 1 and no = 0 |
  Public Insurance B | Public insurance plan B: yes = 1 and no = 0 |
  Public Insurance C | Public insurance plan C: yes = 1 and no = 0 |
  Public Insurance D (least vulnerable) | Public insurance plan D: yes = 1 and no = 0 |
  Public Insurance unknown category | Public insurance plan unknown: yes = 1 and no = 0 |
Clinically assessed oral health | |
 Any front missing teeth | At least one front missing tooth: yes = 1 and no = 0 |
 Caries | Number of caries |
  Less than 6 | Less than 6 caries: yes = 1 and no = 0 |
  6–11 | 6 to 11 caries: yes = 1 and no = 0 |
  12 or more | 12 caries or more: yes = 1 and no =0 |
 Teeth lost due to caries | Number of teeth lost because of dental caries |
  Less than 6 | Less than 6 teeth lost: yes = 1 and no = 0 |
  6–11 | 6 to 11 teeth lost: yes = 1 and no = 0 |
  12 or more | 12 teeth lost or more: yes = 1 and no =0 |
 Malocclusion | Occlusion problems: yes = 1 and no = 0 |
Instrumental variables | |
 Distance to subway | Whether there is a subway station within a 2 km radius from the municipality’s population centroid where participant resides: yes = 1 and no = 0 |
 Travel time to campus | Travel time in minutes from the municipality’s population centroid where the participant resides to the University Campus |
  Tertile 1 | 20 min or less: yes = 1 and no = 0 |
  Tertile 2 | Between 20 and 37 min: yes = 1 and no = 0 |
  Tertile 3 | 37 min or more: yes = 1 and no = 0 |
Other variables of interest | |
Oral health and behaviour | |
  Any missing teeth | At least one missing tooth: yes = 1 and no = 0 |
  Any caries | At least one caries (treated or untreated): yes = 1 and no = 0 |
  Prosthetic need | Clinically assessed prosthetic need (upper and/or lower): yes = 1 and no = 0 |
  Reported daily tooth brushing frequency | Number of times a day the participant brushes teeth |
  Dental visit within past year | At least one dental care visit within the past 12 months: yes = 1 and no = 0 |
  Bad or regular self-rated oral health | Bad or regular self-rated oral health: yes = 1 and no = 0 |
 Rosenberg self-esteem scale | Global self-worth scale (10 to 40; higher values indicate higher global self-esteem) |