Table 1 Caries status according to variables studied
From: Dental caries and erosion status of 12-year-old Hong Kong children
Variable (N) | DMFT > 0 (n, %) | p-value |
|---|---|---|
Children examined (600) | 21% | |
Gender (600) | ||
Girls (284) | 73, 26% | 0.004 |
Boys (316) | 51,16% | |
Place of birth (577) | ||
Hong Kong (491) | 95, 19% | 0.185 |
Not in Hong Kong (86) | 22, 26% | |
Frequency of soft drinks (600) | ||
At least once every two days (120) | 34, 28% | 0.020 |
Less than once every two days (480) | 90, 19% | |
Frequency of citric tea/drinks containing lemon (600) | ||
At least once every two days (113) | 19, 17% | 0.262 |
Less than once every two days (487) | 105, 22% | |
Frequency of fruit juice (600) | ||
At least once every two days (115) | 27, 24% | 0.408 |
Less than once every two days (485) | 97, 20% | |
Frequency of chewing gum (600) | ||
At least once every two days (70) | 15, 21% | 0.867 |
Less than once every two days (530) | 109, 21% | |
Frequency of Vitamin C supplement drinks (600) | ||
At least once every two days (82) | 29, 35% | <0.001 |
Less than once every two days (518) | 95, 18% | |
Frequency of toothbrushing (600) | ||
At least once a day (144) | 34, 24% | 0.317 |
Twice or more (456) | 90, 20% | |
Care taker (598) | ||
Parents (501) | 109, 22% | 0.162 |
Others (97) | 15, 16% | |
Education of father (573) | ||
Primary or below (61) | 16, 26% | 0.579 |
Secondary (395) | 83, 21% | |
Tertiary or above (117) | 23, 20% | |
Education of mother (585) | ||
Primary or below (64) | 15, 23% | 0.848 |
Secondary (434) | 89, 21% | |
Tertiary or above (87) | 19, 22% | |
Parent’ dental knowledge (600) | ||
Low (53) | 9, 17% | 0.534 |
Middle (534) | 111, 21% | |
High (13) | 4, 31% | |
Erosion experience (600) | ||
No (150) | 27, 18% | 0.352 |
Yes (450) | 97, 22% |