Table 1.
Descriptive statistics for the longitudinal European Ancestry sample used for the candidate loci analyses
| Visit 1 (N=1,234) | Visit 2 (N=680) | Visit 3 (N=658) | Visit 4 (N=562) | Visit 5 (N=542) | Visit 6 (N=509) | Visit 7 (N=430) | |
|---|---|---|---|---|---|---|---|
| Longitudinal Cohort (5–20y), N | 769 | 680 | 658 | 562 | 542 | 509 | 430 |
| Cross-sectional Sample (5–19y), N | 465 | ||||||
| Age, mean (SD), years | 11.4 (4.5) | 10.8 (3.5) | 11.7 (3.4) | 13.5 (3.0) | 14.4 (3.0) | 15.1 (2.8) | 15.4 (2.4) |
| Female, N (%) | 644 (52.2) | 363 (53.4) | 350 (53.2) | 294 (52.3) | 291 (53.7) | 266 (52.3) | 234 (54.4) |
| BMI, mean (SD), Z-score | 0.29 (0.81) | 026 (0.86) | 0.26 (0.87) | 0.23 (0.88) | 0.23 (0.92) | 0.24 (0.91) | 0.23 (0.87) |
| Dietary Calcium, mean (SD), mg/d | 931 (493) | 934 (495) | 934 (489) | 916 (524) | 899 (550) | 890 (510) | 845 (470) |
| Total Physical Activity, mean (SD), h/d | 1.5 (1.2) | 1.5 (1.2) | 1.8 (1.2) | 1.8 (1.2) | 1.8 (1.2) | 1.8 (1.2) | 1.7 (1.3) |
| Tanner I, N (%) | 579 (46.9) | 358 (52.7) | 289 (43.9) | 138 (24.6) | 92 (17.0) | 63 (12.4) | 101 (23.5) |
| Tanner II–IV, N (%) | 322 (26.1) | 174 (25.6) | 178 (27.1) | 186 (33.1) | 181 (33.4) | 161 (31.6) | 83 (19.3) |
| Tanner V, N (%) | 333 (27.0) | 148 (21.8) | 191 (29.0) | 238 (42.4) | 269 (49.6) | 285 (56.0) | 246 (57.2) |