Pregnancy and lactation-associated osteoporosis as a major type of premenopausal osteoporosis: a retrospective cohort study based on real-world data

Table 2 Fracture sites in the premenopausal osteoporosis group compared by period

	Total	During the 18 months around childbirth	Other periods	OR	95%CI
Number of fractures	237	74	163
Fracture age (years), mean (SD)	34.6 (6.0)	34.1 (4.9)	34.8 (6.5)
Fracture site
Vertebrae	83	45	38	5.10	2.83–9.92
Pubis	7	6	1	14.30	1.69–121.0
Pelvis excluding pubis	7	4	3	3.05	0.66–14.0
Proximal femur	4	2	2	2.24	0.31–16.20
Proximal humerus	18	4	14	0.61	0.19–1.91
Sacrum	50	8	42	0.35	0.16–0.79
Distal radius	68	5	63	0.12	0.044–0.30

Number, odds ratios (ORs), and 95% confidence intervals (CIs) were calculated by logistic regression. Numbers in bold indicate pregnancy and lactation-associated osteoporosis fractures

ISSN: 1471-2393