Table 1.

Characteristics of the investigated groups.

	CD	UC	CG	P Value
N	100	98	41	CD vs. UC	CD vs. CG	UC vs. CG
Age (years)	35.59 ± 12.79	39.46 ± 14.69	30.37 ± 8.58	ns.	ns	0.001
Body weight (kg)	63.39 ± 13.71	68.38 ± 14.83	74.63 ± 14.07	0.032	0.001	ns
Height (cm)	171.17 ± 10.19	171.01 ± 9.25	173.05 ± 9.25	ns	ns	ns
BMI (kg/m2)	21.51 ± 3.72	23.29 ± 4.28	24.79 ± 3.51	0.004	<0.001	ns
Vit. D (ng/mL)	21.14 ± 11.73	21.74 ± 8.87	21.34 ± 8.94	ns	ns	ns
Ca (mmol/L)	2.32 ± 0.19	2.36 ± 0.14	2.37 ± 0.08	ns	ns	ns
P (mmol/L)	1.13 ± 0.26	1.11 ± 0.28	1.20 ± 0.20	ns	ns	ns
L2–L4 BMD (g/cm2)	1.11 ± 0.18	1.16 ± 0.14	1.23 ± 0.08	ns	0.001	0.019
L2–L4 T-score	−0.90 ± 1.45	−0.42 ± 1.15	0.12 ± 0.69	ns	<0.001	0.015
L2–L4 Z-score	−0.12 ± 1.18	−0.12 ± 1.18	0.09 ± 0.64	ns	0.015	ns
Femoral neck BMD (g/cm2)	0.94 ± 0.18	0.98 ± 1.18	1.08 ± 1.16	ns	<0.001	0.010
Femoral neck T-score	−0.64 ± 1.30	−0.31 ± 1.22	0.44 ± 1.02	ns	<0.001	0.003
Femoral neck Z-score	−0.25 ± 1.11	0.08 ± 1.06	0.38 ± 0.97	ns	0.006	ns
Patients with bone fractures (n) %	(26) 26%	(29) 29.6%	(0) 0.0%	ns	<0.001	<0.001
Women	CD	UC	CG	P Value
n	49	52	20	CD vs. UC	CD vs. CG	UC vs. CG
Women with bone fractures (n) %	(13) 26.5%	(15) 28.8%	n.o.	ns	0.011	0.007
BMI (kg/m2)	21.17 ± 4.04	22.10 ± 4.32	23.39 ± 3.09	ns	0.031	ns
L2–L4 BMD (g/cm2)	1.06 ± 0.17	1.17 ± 0.13	1.21 ± 0.08	0.001	0.005	ns
L2–L4 T score	−1.17 ± 1.41	−0.34 ± 1.15	0.06 ± 0.65	0.002	0.004	ns
L2–L4 Z score	−0.54 ± 1.26	0.13 ± 1.17	0.21 ± 0.65	0.020	0.056	ns
Femoral neck BMD (g/cm2)	0.85 ± 0.15	0.93 ± 1.14	0.99 ± 0.09	0.014	0.004	ns
Femoral neck T-score	−1.08 ± 1.27	−0.49 ± 1.11	0.08 ± 0.72	0.033	<0.001	ns
Femoral neck Z-score	−0.50 ± 1.13	0.03 ± 1.00	0.20 ± 0.70	0.064	0.015	ns
Men	CD	UC	CG	P Value
n	51	47	21	CD vs. UC	CD vs. CG	UC vs. CG
Men with bone fractures (n) %	(13) 25.5%	(14) 29.8%	n.o.	ns	0.013	0.006
BMI (kg/m2)	21.58 ± 3.35	24.85 ± 3.83	25.27 ± 5.98	0.002	<0.001	ns
L2–L4 BMD (g/cm2)	1.20 ± 0.18	1.18 ± 0.14	1.27 ± 0.08	ns	ns	ns
L2–L4 T score	−0.64 ± 1.45	−0.51 ± 1.16	0.17 ± 0.74	ns	0.089	ns
L2–L4 Z score	−0.39 ± 1.34	−0.42 ± 1.13	−0.27 ± 0.63	ns	ns	ns
Femoral neck BMD (g/cm2)	1.03 ±0.16	1.05 ± 0.16	1.17 ± 0.16	ns	0.016	0.040
Femoral neck T-score	−0.23 ± 1.19	−0.11 ± 1.31	0.78 ± 1.16	ns	0.007	0.023
Femoral neck Z-score	−0.01 ± 1.05	0.21 ± 1.14	0.56 ± 1.17	ns	ns	ns

Abbreviations: IBD—inflammatory bowel disease, UC—ulcerative colitis, CD—Crohn’s disease, BMD—bone mineral density, CG—control group. Quantitative data were presented as mean with standard deviation. n.o.—not observed, ns—non-significant (only statistically significant or borderline significant results were shown).