Table 1. Participant characteristics according to the age of menarche.1 .
| Variables | Menarche ≤ 12 years | p value | |
| Yes (n = 60) | No(n = 74) | ||
| Age at baseline (years) | 8 (6, 10) | 10 (8, 11) | 0.001 |
| Interval between the age at study initiation and the age of menarche (years) | 3 (1, 6) | 4 ( 2, 6) | 0.08 |
| Height for age at baseline: Z score | –0.23 (–0.94, 0.40)2 | –0.46 (–1.24, 0.47) | 0.1 |
| BMI for age at baseline: Z score | –0.49 (–0.95, 0.11) | –0.51 (–1.05, 0.27) | 0.9 |
| Weight status; No. (%) | |||
| Underweight | 6(10) | 9(12.3) | |
| Overweight /obese | 4(6.7) | 9(12.3) | 0.5 |
| Maternal age at menarche(years) | 13(13, 14) | 13(13, 14) | 0.1 |
| Family size | |||
| ≤4 | 36 (60) | 38 (51.4) | |
| 5 | 15 (25) | 14 (18.9%) | |
| ≥6 | 9 (15) | 22 (29.7) | 0.1 |
| Smoking exposure; No. (%) | |||
| Yes | 9 (15) | 16 (21.6) | |
| No | 51(85) | 58 (78.4) | 0.3 |
| Energy intake (kcal/height) | 14.5 (12.4, 16.7) | 14.4 (12.3, 17.3) | 0.6 |
| Carbohydrate (% energy) | 56.8±6.03 | 58.6±7.2 | 0.1 |
| Total fat (% energy) | 33.6±6.1 | 32 ± 7.4 | 0.1 |
| Protein (% energy) | 11.3 ±2.2 | 11.2 ± 1.9 | 0.8 |
| Milk intake (g/ 1000 kcal)4 | 51.2 (0.0, 113.2) | 0.0 (0.0, 72.5) | 0.02 |
| Yoghurt intake (g/1000 kcal) | 18.2 (0.0, 40.0) | 24.7 (0.0, 54.9) | 0.4 |
| Cheese intake (g/ 1000 kcal) | 3.1 (0.0, 5.9) | 4.6 (1.5, 8.1) | 0.05 |
| Calcium intake (mg/1000 kcal) | 295.9 (208.3, 402.2) | 271.4 (234.3, 336.7) | 0.3 |
| Magnesium intake (mg/1000 kcal) | 57.5 (44.2, 75.3) | 49.8 (42.0, 63.7) | 0.04 |
| Phosphorus intake (mg/ 1000 kcal) | 375.4 (290.8, 462.0) | 326.4 (275.5, 379.4) | 0.01 |
1
T-test and Mann-Whitney U-test was used for normally and non-normally distributed continuous variables, respectively, and chi-square test for categorical variables.
2
Median (interquartile range; IQR) (all such values).
3
Mean±SD (all such values).
4
n 16 values were missed for milk, yoghurt, and cheese intake.