Table 1.
Characteristics of cohort (n = 2305)
| Characteristic | Male, n = 1100 | Female, n = 1205 |
|---|---|---|
| Age (months) | 185 (3) | 185 (3) |
| BMD (g/cm2) | 1.12 (0.09) | 1.10 (0.07) |
| BMC (kg) | 2.65 (0.49) | 2.37 (0.37) |
| BA (cm2) | 2342 (273) | 2143 (231) |
| Height (cm) | 174 (8) | 165 (6) |
| Fat mass (kg) [median (IQR)] | 8.4 (5.9–12.7) | 17.1 (13.4–22.1) |
| Fasting insulin (IU /liter) [median (IQR)] | 8.08 (5.91–10.70) | 9.64 (7.27–12.51) |
| Fasting glucose (mmol/liter) | 5.28 (0.37) | 5.12 (0.34) |
| Fasting triglycerides (mmol/liter) [median (IQR)] | 0.72 (0.57–0.96) | 0.76 (0.61–0.98) |
| Fasting HDLc (mmol/liter) | 1.22 (0.27) | 1.36 (0.30) |
| Time spent in MVPA (min/d) [median (IQR)]a | 25.7 (16.2–41.0) | 15.1 (7.6–26.0) |
| Maternal smoking [n (%)] | ||
| Never | 941 (86) | 1022 (85) |
| Pre/early pregnancy | 44 (4) | 53 (4) |
| Through pregnancy | 115 (10) | 130 (11) |
| Paternal smoking [n (%)] | ||
| Never | 764 (70) | 842 (70) |
| Ever | 336 (30) | 363 (30) |
| Head of household social class [n (%)] | ||
| I | 213 (19) | 217 (18) |
| II | 535 (49) | 564 (47) |
| III nonmanual | 240 (22) | 264 (22) |
| III manual | 78 (7) | 110 (9) |
| IV/V | 34 (3) | 50 (4) |
| Maternal education [n (%)] | ||
| Less than degree | 891 (81) | 963 (80) |
| University degree | 209 (19) | 242 (20) |
| Paternal education [n (%)] | ||
| Less than degree | 808 (73) | 899 (75) |
| University degree | 292 (27) | 306 (25) |
| Ethnicity [n (%)] | ||
| White | 1077 (97.9) | 1190 (98.8) |
| Non-White | 23 (2.1) | 15 (1.2) |
| Puberty (Tanner stage of pubic hair) [n (%)] | ||
| 1/2 | 16 (1.5) | 4 (0.3) |
| 3 | 109 (9.9) | 115 (9.5) |
| 4 | 577 (52.5) | 645 (53.5) |
| 5 | 398 (36.2) | 441 (36.6) |
Results are shown as mean (sd) or median [interquartile range (IQR)] for continuous variables and n (percent) for categorical variables.
a
Valid data available only on a subsample: 507 males and 647 females.