Table 2: Determinants for poor self-assessed oral health based on multiple logistic regression analysis among adults in Tehran, Iran ( ).

OR (95% CI)* OR (95% CI)**

Age (years)1.02 (1.01–1.03)<0.0011.01 (1.00–1.03)0.02
Gender
 Male1.00 (ref.)1.00 (ref.)
 Female0.79 (0.56–1.11)0.170.96 (0.65–1.40)0.83
Years of education
 ≥121.00 (ref.)1.00 (ref.)
 <122.76 (1.94–3.94)<0.0011.88 (1.23–2.87)0.004
Living area (m2/p)
 ≥401.00 (ref.)1.00 (ref.)
 20–391.51 (0.86–2.65)0.151.57 (0.87–2.83)0.12
 <202.24 (1.25–3.99)0.0061.85 (1.00–3.42)0.04
Oral health literacy scores
 12–171.00 (ref.)1.00 (ref.)
 10-111.41 (0.85–2.25)0.131.08 (0.65–1.80)0.75
 0–92.08 (1.40–3.11)<0.0011.58 (1.02–2.45)0.04
Tooth-brushing behaviour
 Twice daily or more1.00 (ref.)1.00 (ref.)
 Once daily1.52 (0.99–2.34)0.0551.40 (0.88–2.22)0.14
 Less than once daily3.99 (2.52–6.32)<0.0013.35 (2.02–5.57)<0.001

simple regression analysis.
**Adjusted OR, goodness of fit by Hosmer and Lemeshow test ( ).