Mutifactorial analysis of risk factors for reduced bone mineral density in patients with Crohn’s disease

Table 3 Comparison of those patients with and without osteoporosis and the presence of risk factors (mean ± SD)

Risk factor	Osteoporosis atlumbar spineand/or hip( n = 47)	Osteopenia/normal bonemineral density(n = 211)	P
BMI (kg/m2)	22.3 ± 0.6	25.2 ± 0.3	< 0.0001
Corticosterid use (mo)	92.3 ± 16.7	34.9 ± 3.2	< 0.0001
Disease duration (yr)	18.9 ± 1.5	13.2 ± 0.6	< 0.005
Age (yr)	46.8 ± 11.4	44.1 ± 11.5	NS
Small bowel resection (Y/N)	10/37	105/106	NS
Current smokers (Y/N)	11/36	72/139	NS
Gender (M/F)	22/25	69/142	NS

Analysis was made using Student’s unpaired t-test or the chi-squared test where appropriate; NS: not significant.