Table 3 Mean dmft scores of the surveyed children according to parental dental knowledge and socio-economic status
From: Oral health status and behaviours of preschool children in Hong Kong
Independent variable | Group | No. (%) | dmft ± S.D. | Sig. | Bonferroni Comparison |
|---|---|---|---|---|---|
Parental dental knowledge | Score 0-7a | 69 (10%) | 3.0 ± 4.2 | p < 0.01 | a, b > c |
Score 8-14b | 358 (51%) | 2.7 ± 3.8 | |||
Score 15-21c | 273 (39%) | 1.4 ± 2.6 | |||
Family income (HKD) | ≤ 10000 a | 234 (33%) | 2.8 ± 4.0 | p < 0.01 | a, b > c |
10000 – 20000 b | 241 (34%) | 2.6 ± 3.6 | |||
≥ 20000 c | 225 (32%) | 1.2 ± 2.5 | |||
Father’s education level | Primary or below a | 93 (14%) | 2.7 ± 4.1 | p < 0.01 | a, b > c |
Secondary b | 477 (69%) | 2.4 ± 3.6 | |||
Tertiary or above c | 136 (20%) | 1.1 ± 2.1 | |||
Mother’s education level | Primary or below a | 125 (18%) | 2.9 ± 4.1 | p < 0.01 | a > c |
Secondary b | 477 (69%) | 2.2 ± 3.4 | |||
Tertiary or above c | 92 (13%) | 1.3 ± 2.6 | |||
Parenthood | Single | 31 (4%) | 3.8 ± 4.6 | p = 0.01 | |
Double | 669 (96%) | 2.1 ± 3.4 | |||
Care taker | Parents a | 469 (67%) | 2.2 ± 3.5 | p < 0.01 | a, b, d > c |
Grandparents b | 112 (16%) | 3.0 ± 4.1 | |||
Domestic helpers c | 105 (15%) | 1.2 ± 2.2 | |||
Others d | 14 (2%) | 3.2 ± 3.7 |