Table 3.

Multivariable linear regression analysis assessing the effect of demographic variables on changes in the maternal bone mineral density at femoral neck between the first and third trimester of pregnancy

Variable	B	SE	Beta	P	95% CI for B
Constant	0.0023	0.0359		0.95	− 0.070 to 0.074
Maternal age	0.0003	0.0003	0.15	0.27	− 0.001 to 0.001
Parity	0.0010	0.0027	0.05	0.71	− 0.004 to 0.006
Maternal height	0.0001	0.0001	0.03	0.84	− 0.001 to 0.001
Body mass index	− 0.0014	0.0008	− 0.22	0.11	− 0.003 to 0.001

CI confidence intervals