Table 1.

Demographic and anthropometric characteristics of Ocs users and nonusers

	All patients n = 410		Pre-menopausal women n = 92		Post menopausal women n = 318
Variables	OC users N = 210	Nonusers n = 200	OC users n = 43	Nonusers n = 49	OC users n = 167	Nonusers n = 151
Age (years)	54.3 ± 7.7	57.2 ± 11.2*	45 ± 5	43.9 ± 6.3	56.7 ± 6.3	61.5 ± 8.8
BMI (kg/m2)	28 ± 4.5	28.5 ± 4.8	28.8 ± 3.9	27.2 ± 4.3	27.8 ± 4.6	28.8 ± 4.9
Age at menarche (years)	12.7 ± 1.8	12.6 ± 1.6	13.1 ± 1.6	12.4 ± 1.4	12.5 ± 1.8	12.6 ± 1.7
Number of pregnancies	4.4 ± 2.2	4.2 ± 3.5	3.6 ± 1.8	1.6 ± 1.4	4.6 ± 2.2	5 ± 3.5
Breast feeding duration (months)	29.9 ± 42.7	30 ± 42.9	17.5 ± 21.9	10.5 ± 12	33.1 ± 46	35.9 ± 47
Age of menopause (years)	46.5 ± 9.4	47 ± 6.8	-	-	47.9 ± 4.9	47.3 ± 5.7
Daily calcium intake (mg/j)	695 ± 229	688 ± 226	730 ± 258	713.1 ± 204	686.9 ± 221	680.8 ± 233
Lumbar spine(g/cm2)	1.01 ± 0.17	0.99 ± 0.19	1.14 ± 0.13	1.11 ± 0.17	0.984 ± 0.16	0.964 ± 0.18
Femoral neck (g/cm2)	0.88 ± 0.13	0.88 ± 0.15	1 ± 0.13	0.9 ± 0.15	0.859 ± 0.12	0.852 ± 0.14
Word's triangle (g/cm2)	0.72 ± 0.16	0.71 ± 0.17	0.86 ± 0.13	0.81 ± 0.15	0.69 ± 0.15	0.68 ± 0.16
Trochanter (g/cm2)	0.72 ± 0.12	0.71 ± 0.14	0.82 ± 0.1	0.77 ± 0.13	0.699 ± 0.11	0.693 ± 0.13
Total femur (g/cm2)	0.93 ± 0.14	0.91 ± 0.15	1.06 ± 0.1	1.01 ± 0.1	0.903 ± 0.13	0.884 ± 0.14
Calcium (mg/dl)	96.4 ± 5.2	97 ± 4.8	95.4 ± 6.1	95.9 ± 3.9	96.9 ± 4.7	97.6 ± 5.27
Phosphatus (mg/dl)	36.1 ± 4.9	35.5 ± 5	34.56 ± 5.13	34.08 ± 4.16	36.9 ± 4.7	36.4 ± 5.3
25 OH Vitamin D	18.8 ± 8.1	17.4 ± 7.9	20.2 ± 7.4	17.08 ± 7.8	17.7 ± 8.17	18.16 ± 8.46
Osteocalcin (ng/ml)	21.4 ± 10	23.9 ± 14	15.5 ± 7.5	21.6 ± 9*	23.9 ± 10.4	25.4 ± 17.4
CTX (ng/ml)	0.42 ± 0.2	0.46 ± 0.21	0.30 ± 0.11	0.41 ± 0.2*	0.47 ± 0.22	0.50 ± 0.29

*Significantly different from Oral contraception users. p < 0,005