Table 4 Unadjusted and adjusted odds ratio (OR) and 95% confidence interval (CI) of being dissatisfied with dental appearance and function according to socio-demographics (step 1), clinically assessed criteria of malocclusion, SMO (step 11) and subject-rated oral health (step III)

Step I (socio demographics R ²=

Kinondoni

1

1

Temeke

0.7 (0.5–0.8)

0.5 (0.3–0.8)

Boy

1

1

Girl

0.9 (0.7–1.1)

1.0 (0.7–1.4)

Urban

1

1

Rural

0.9 (0.7–1.2)

0.7 (0.4–1.0)

12 yr

1

1

13 yr

1.0 (0.8–1.4)

0.8 (0.5–1.3)

14

1.2 (0.8–1.6)

0.9 (0.7–1.4)

Both parents low education

1

1

One low/one high

0.7 (0.4–1.1)

0.7 (0.4–1.1)

Both parents high education

0.6 (0.4–0.9)

0.6 (0.4–0.9)

Step II (clinical status)

SMO = 0

1

1

SMO > 0

1.6 (1.2–1.9)

1.2 (0.6–1.6)

Step III (reported problems)

Pain : no

1

1

Pain: yes

1.4 (1.1–1.8)

0.8 (0.5–1.3)

Problem swallowing: no

1

1

Problem swallowing: yes

1.5 (1.0–2.1)

1.1 (0.5–1.9)

Problem position: no

1

1

Problem position: yes

3.4 (2.5–4.7)

4.3 (2.7–6.9)

Problem spaces: no

1

1

Problem spaces: yes

1.7 (1.1–2.4)

1.4 (0.8–2.3)

Step IV (oral disadvantage)

OIDP = 0

1

1

OIDO > 0

1.8 (1.4–2.3)

2.2 (1.4–3.1)

Self rated health: good

1

1

Self rated health: bad

3.3 (2.1–5.1)

2.7 (1.5–5.1)