Clinical Study

Determinants of Secondary Hyperparathyroidism in Bariatric Patients after Roux-en-Y Gastric Bypass or Sleeve Gastrectomy: A Pilot Study

Table 3

Stepwise multivariate logistic regression analysis with the presence of secondary hyperparathyroidism as dependent variable and potential risk factors as independent variables.

Secondary hyperparathyroidismModel Exp()P value

Men and premenopausal women
Model 1
 Age (years)5.0050.9510.329
 Sex10.2690.604
 Current smoking2.3620.124
 25-hydroxyvitamin D (ng/mL)0.8690.037
Model 2
 Age (years)11.5240.1480.701
 Sex10.6120.434
 Current smoking6.9660.013
 Calcium (mg/dL)0.1590.033
Model 3
 Age (years)10.0821.7530.186
 Sex11.0960.295
 Current smoking5.2020.033
 Magnesium (mg/dL)0.0260.046
Postmenopausal women
Model 1
 Age (years)4.6890.0020.967
 YSM (years)1.1320.038
 Current smoking0.5490.459
 25-hydroxyvitamin D (ng/mL)1.8080.179
Model 2
 Age (years)5.8790.8400.359
 YSM (years)1.1950.025
 Current smoking0.4140.520
 Calcium (mg/dL)0.0230.878
Model 3
 Age (years)3.7450.9920.907
 YSM (years)1.2560.110
 Current smoking3.2400.383
 Magnesium (mg/dL)1.8760.768

YSM: years since menopause.
1Reference category: male sex.
Statistical significance was set at the level of P value <0.05.