Table 5 Adjusted odds ratios (ORs) and 95% confidence intervals (CIs) for students' dental checkups and reported abstinence from tobacco products, according to sex, place of origin, age, educational level, and year of survey.

Sex

Female vs male

2.5

2.0–3.1

6.8

4.2–11.2

Age

19–25 yrs vs >25 yrs

0.9

0.7–1.2

1.6

1.6–2.2

Place of residence

Urban vs rural

1.5

1.2–1.9

1.0

0.7–1.3

Educational level

Higher vs lower

1.2

0.9–1.5

0.6

0.4–0.8

Survey year

2001 vs 1999

1.0

0.9–1.3

1.5

1.1–1.9