Table 2.
Comparison of means ± SD of demographic characteristics in women ≤30 years (n = 73) and women >30 years of age (n = 59); significance based on Levene's test for Equality of Variances.
| ≤30 years | >30 years | P value | |
|---|---|---|---|
| Height mean ± SD | 162.63 ± 6.38 | 162.32 ± 6.35 | NS |
| Prepregnancy weight mean ± SD | 62.55 ± 13.08 | 65.78 ± 12.73 | NS |
| Prepregnancy BMI mean ± SD | 23.59 ± 4.42 | 24.89 ± 4.20 | NS |
| Current weight mean ± SD | 70.12 ± 13.87 | 74.02 ± 14.07 | NS |
| Current BMI mean ± SD | 26.47 ± 4.71 | 28.00 ± 4.39 | NS |
| Weight gain mean ± SD | 7.58 ± 5.41 | 9.36 ± 9.28 | NS |
| Gravidity mean ± SD | 2.51 ± 1.57 | 5.95 ± 2.69 | 0.000 |
| Parity mean ± SD | 2.38 ± 1.41 | 5.83 ± 2.51 | 0.000 |
| Months lactation mean ± SD | 12.04 ± 16.21 | 45.59 ± 36.08 | 0.000 |
| Months pregnancy + lactation mean ± SD | 32.16 ± 27.06 | 94.72 ± 54.29 | 0.000 |
| FN-BMD mean ± SD | 0.805 ± 0.11 | 0.782 ± 0.09 | 0.031 |
| FN T-scores mean ± SD | [−0.401] ± 1.04 | [−0.597] ± 0.85 | 0.023 |
| FN Z-scores mean ± SD | [−0.373] ± 1.03 | [−0.410] ± 0.84 | 0.029 |
| LS-BMD mean ± SD | 0.921 ± 0.25 | 0.897 ± 0.43 | NS |
| LS T-scores mean ± SD | [−0.907] ± 1.00 | [−0.532] ± 1.06 | NS |
| LS Z-scores mean ± SD | [−0.830] ± 0.98 | [−0.358] ± 1.07 | NS |
SD: standard deviation; NS: not significant; BMI: body mass index; FN: femoral neck; BMD: bone mineral density; LS: lumbar spine.