Bone Mineral Density in Gravida: Effect of Pregnancies and Breast-Feeding in Women of Differing Ages and Parity
Table 3
Comparison of bone density variables among primiparous women to the multiparous (≥2 births) women; significance based on Levene’s test for Equality of Variances.
Primiparous ( = 27)
Multiparous ( = 105)
value
Maternal age mean ± SD (years)
24.9 ± 3.5
31.1 ± 5.8
0.000
Height mean ± SD
162.5 ± 5.5
162.5 ± 6.6
NS
Prepregnancy weight mean ± SD
62.5 ± 15.2
64.4 ± 12.4
NS
Prepregnancy BMI mean ± SD
23.6 ± 5.1
24.3 ± 4.2
NS
Current weight mean ± SD
70.1 ± 14.9
72.3 ± 13.8
NS
Current BMI mean ± SD
26.5 ± 5.2
27.3 ± 4.5
NS
Weight gain mean ± SD
7.6 ± 5.2
8.6 ± 7.9
NS
Gravidity mean ± SD
1.07 ± 0.39
4.81 ± 2.5
0.000
Parity mean ± SD
1.0 ± 0
4.68 ± 2.4
0.000
Months lactation mean ± SD
0
34.1 ± 31.9
0.000
Months pregnancy + lactation mean ± SD
8.5 ± 0
73.4 ± 50.1
0.000
FN-BMD mean ± SD
0.806 ± 0.09
0.791 ± 0.11
NS
FN -scores mean ± SD
−0.396] ± 0.79
−0.530] ± 1.0
NS
FN -scores mean ± SD
−0.381] ± 0.79
−0.408] ± 0.99
NS
LS-BMD mean ± SD
0.953 ± 0.11
0.898 ± 0.38
NS
LS -scores mean ± SD
−0.841] ± 1.0
−0.715] ± 1.1
NS
LS -scores mean ± SD
−0.722] ± 0.93
[−0.594] ± 1.1
NS
SD: standard deviation; NS: not significant; BMI: body mass index; FN: femoral neck; BMD: bone mineral density; LS: lumbar spine.
