Bone Mineral Density in Gravida: Effect of Pregnancies and Breast-Feeding in Women of Differing Ages and Parity
Table 2
Comparison of means ± SD of demographic characteristics in women ≤30 years ( = 73) and women >30 years of age ( = 59); significance based on Levene’s test for Equality of Variances.
≤30 years
>30 years
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 -scores mean ± SD
−0.401] ± 1.04
−0.597] ± 0.85
0.023
FN -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 -scores mean ± SD
−0.907] ± 1.00
−0.532] ± 1.06
NS
LS -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.
