Table 2 Descriptive statistics of the participants with complete datasets n = 602 at follow up
Variable | Sex | Mean (SD) | 25th% | Median | 75th% |
|---|---|---|---|---|---|
Age (yrs.) | Boys | 11.5 (0.89) | 10.8 | 11.4 | 12.2 |
Girls | 11.5 (0.87) | 10.7 | 11.4 | 12.2 | |
Height (cm) | Boys | 151.2 (8.88) | 145 | 151.1 | 156.5 |
Girls | 150.5 (8.3) | 144.4 | 150.4 | 156.5 | |
Weight (kg) | Boys | 40.7 (8.46) | 34.5 | 39.3 | 45.2 |
Girls | 40.9 (8.81) | 34.8 | 40.05 | 46 | |
Fat mass (kg) | Boys | 8.2 (5.02) | 4.6 | 6.8 | 10.2 |
Girls | 10.5 (5.0) | 6.8 | 9.5 | 13.03 | |
Lean mass (kg) | Boys | 30.7 (4.97) | 27.2 | 30.1 | 33.2 |
Girls | 28.4 (4.96) | 24.5 | 27.8 | 31.8 | |
BMC (g) | Boys | 1189 (267) | 1007 | 1169 | 1314 |
Girls | 1183 (313) | 945.5 | 1142 | 1363 | |
BMD (g/cm2) | Boys | 0.83 (0.06) | 0.79 | 0.83 | 0.87 |
Girls | 0.83 (0.08) | 0.78 | 0.83 | 0.88 | |
BA (cm2) | Boys | 1405 (222) | 1246 | 1399 | 1540 |
Girls | 1390 (249) | 1211.2 | 1372.3 | 1545.5 | |
Accelerometer (Days registered) | Boys | 6.1 (0.97) | 5 | 6 | 7 |
Girls | 6.1 (0.96) | 5 | 6 | 7 | |
Sedentary Activity (%) | Boys | 62 | 58 | 62 | 65 |
Girls | 64 | 61 | 64 | 68 | |
Low activity (%) | Boys | 29 | 26 | 29 | 31 |
Girls | 29 | 26 | 29 | 31 | |
Moderate to high activity (%) | Boys | 9 | 6 | 7 | 9 |
Girls | 7 | 6 | 7 | 9 | |
Pubertal stages | Boys (n) | Girls (n) | |||
Tanner stage 1 (n) | 55 | 97 | |||
Tanner stage 2 (n) | 139 | 124 | |||
Tanner stage 3 (n) | 87 | 102 | |||
Tanner stage 4 (n) | 15 | 23 | |||
Tanner stage 5 (n) | 3 | 2 | |||
Fishers exact test | <0.001* |