Table 1.

Anthropometric data and clinical features of the respondents to the survey

	PLO	Control	p value
n	27	43
Age (years)- mean (SD)	36.2 (4.7)	38.8 (4.3)
Smoking before pregnancy	5 (19%)	3 (7%)	0.245
Menstrual irregularities	9 (33%)	19 (44%)	0.455
Physical activity
Before pregnancy	13 (48%)	31 (72%)	0.074
Before pregnancy ≥2 hours/week	10 (37%)	29 (67%)	0.015
During pregnancy	8 (30%)	22 (51%)	0.088
During pregnancy ≥2 hours/week	7 (11%)	19 (44%)	0.003
Calcium supplementation during pregnancy	2 (7%)	13 (30%)	0.034
Vitamin D3 supplementation during pregnancy	5 (19%)	17 (40%)	0.111
Enoxaparin use	7 (26%)	2 (7%)	0.038
Steroid use	2 (7%)	5 (12%)	0.698
Osteoporosis in family	9 (33%)	14 (33%)	1
Fracture in family	1 (4%)	4 (9%)	0.642
Lactation	29 (96%)	37 (86%)	0.236
Dietary calcium intake (mg), mean (SD)	486 (291)	393 (220)	0.17

The data are presented as number, unless stated otherwise

PLO pregnancy- and lactation-induced osteoporosis, SD standard deviation