Is There Association between Vitamin D Concentrations and Body Mass Index Variation in Women Submitted to Y-Roux Surgery?

Table 1

Characterization and comparison of RYGB and control groups ().

	RYGB group ()	Control group ()	value
Age (years)	45.0 ± 9.0	43.7 ± 9.1	0.232^1
Ethnicity (white)	35 (71.4%)	16 (39.0%)	0.002^2
Menopause (yes)	19 (38.7%)	16 (39.0%)	0.576^2
Use of OCP (yes)	6 (12.2%)	7 (17.1%)	0.559^2
Supplementation (yes)	33 (67.3%)	1 (2.4%)	<0.001^2
Regular photoprotection (yes)	20 (40.8%)	23 (56.1%)	0.204^2
Physical activity (yes)	31 (63.3%)	29 (70.7%)	0.506^2
Smoking (yes)	3 (6.1%)	12 (29.3%)	0.004^2
25(OH)D <20 ng/dL	27 (55.1%)	8 (21.8%)	0.009^1

OCP: oral contraceptive pill; ¹significance level of Student’s t-test; ²significance level of the chi-square test.