Table 1 Characteristics of children enrolled at baseline in checkups for 18-month-olds
From: Homecare protective and risk factors for early childhood caries in Japan
All children | Enrolled Baseline | After 2 years Follow-up | ||||
|---|---|---|---|---|---|---|
Age (months): mean (SD) range | 18.5 (0.69) 18–23 | 18.5 (0.69) 18–23 | 42.8 (0.83) 41–48 | |||
n | % | n | % | n | % | |
Gender | ||||||
Male | 281 | 48.4 | 278 | 49.1 | – | – |
Female | 300 | 51.6 | 288 | 50.9 | – | – |
Position in birth order | ||||||
First | 262 | 45.1 | 258 | 45.6 | – | – |
≥Second | 319 | 54.9 | 308 | 54.4 | – | – |
Number of siblings | ||||||
0 | 235 | 40.4 | 232 | 41.0 | 114 | 20.1 |
≥ 1 | 346 | 59.6 | 334 | 59.0 | 452 | 79.9 |
Mother is a primary daytime caregiver | ||||||
Yes | 394 | 67.8 | 388 | 68.6 | 137 | 24.2 |
No | 187 | 32.2 | 178 | 31.4 | 427 | 75.4 |
No answer | 0 | 0.0 | 0 | 0.0 | 2 | 0.4 |
Grandparent is a primary daytime caregiver | ||||||
Yes | 231 | 39.8 | 227 | 40.1 | 441 | 77.9 |
No | 350 | 60.2 | 339 | 59.9 | 123 | 21.7 |
No answer | 0 | 0.0 | 0 | 0.0 | 2 | 0.4 |
Children with untreated tooth | ||||||
0 | 566 | 97.4 | 566 | 100 | 411 | 72.6 |
≧ 1 | 15 | 2.6 | 0 | 0.0 | 155 | 27.4 |
Children with a treated tooth | ||||||
0 | 581 | 92.3 | 566 | 100 | 526 | 92.9 |
≧1 | 0 | 0.0 | 0 | 0.0 | 40 | 7.1 |
Children’s caries status | ||||||
Caries-free | 566 | 97.4 | 566 | 100 | 393 | 69.4 |
Caries | 15 | 2.6 | 0 | 0.0 | 173 | 30.6 |
Mother with untreated caries | ||||||
No | – | – | – | – | 406 | 71.7 |
Yes | – | – | – | – | 89 | 15.7 |
No answer | – | – | – | – | 71 | 12.5 |
Mother with treated caries | ||||||
No | – | – | – | – | 150 | 26.5 |
Yes | – | – | – | – | 345 | 61.0 |
No answer | – | – | – | – | 71 | 12.5 |
Mothers with caries | ||||||
Caries-free | – | – | – | – | 95 | 16.8 |
Caries | – | – | – | – | 400 | 70.7 |
No answer | – | – | – | – | 71 | 12.5 |
Total | 581 | 100.0 | 566 | 100.0 | 566 | 100.0 |