Table 2.
Characteristics of the analysis sample
| No. of individuals | Proportion or Mean (SD) | |
|---|---|---|
| Individuals | 536 | |
| Individual average BMI | 536 | 15.09 (1.59) |
| Age | ||
| At birth | 536 | 0 (0) |
| Follow-up #1 | 536 | 6.28 (0.74) |
| Follow-up #2 | 531 | 19.49 (0.75) |
| Follow-up #3 | 497 | 31.77 (0.96) |
| Follow-up #4 | 435 | 49.85 (1.82) |
| Follow-up #5 | 478 | 62.25 (3.23) |
| Zygositya | ||
| DZ twin | 149 | 0.51 |
| MZ twin | 143 | 0.49 |
| Sexa | ||
| Female-female twin | 122 | 0.42 |
| Male-male twin | 102 | 0.35 |
| Female-male twin | 68 | 0.23 |
| Physical Activity | ||
| More | 156 | 0.37 |
| Equal | 253 | 0.59 |
| Less | 17 | 0.04 |
| Individual proportion of follow-up attending daycare facility | 530 | 0.42 (0.37) |
| Individual proportion of follow-up with sufficient sleep | 524 | 0.57 (0.31) |
| Race | ||
| Caucasian | 518 | 1 |
| Other | 0 | 0 |
aAnalysis conducted with respect to each twin pairs instead of individuals
No number, SD standard deviation, BMI body mass index, MZ monozygotic, DZ dizygotic