Table 1.
Comparison between the characteristics of the eligible participants and the remaining cohort evaluated at baseline * (numbers of participants and percentages, with medians and interquartile ranges).
| Sample ¥ (n = 607) |
Remaining Cohort § (n = 8040) |
||||
|---|---|---|---|---|---|
| n | % | n | % | p | |
| Child’s sex n (%) | |||||
| Female | 289 | 47.6 | 3947 | 49.1 | 0.482 |
| Male | 318 | 52.4 | 4093 | 50.9 | |
| <37 weeks | 39 | 7.9 | 484 | 9.2 | 0.361 |
| ≥37 weeks | 452 | 92.1 | 5783 | 90.8 | |
| Weight at birth (g) | 607 | 8039 | |||
| Median | 3240 | 3190 | 0.112 | ||
| (IQR) | (2900–3509) | (2880–3490) | |||
| Mothers’ age (years) n | 607 | 8034 | |||
| Median | 29 | 29 | 0.446 | ||
| (IQR) | (26–33) | (25–33) | |||
| Maternal education (years) n | 606 | 6818 | |||
| Median | 12 | 11 | 0.087 | ||
| (IQR) | (9–15) | (8–14) | |||
| Low: ≤1000 € | 163 | 27.2 | 2117 | 32.0 | 0.022 |
| Intermediate: 1001–1500 € | 165 | 27.5 | 1849 | 27.9 | |
| High: >1500 € | 271 | 45.2 | 2652 | 40.1 | |
* For each variable, the total may not add to 607/8040 due to missing data; ¥ children who attended the dental examination at 4 and 7 years of age; § cohort evaluated at baseline; IQR, interquartile range.