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Table 1 Characteristics of patients according to absence or presence of metabolic syndrome

From: Parathyroid hormone, but not vitamin D, is associated with the metabolic syndrome in morbidly obese women and men: a cross-sectional study

Variables Total Metabolic syndrome
Absent Present P
n 1017 323 (32%) 694 (68%)  
Women 68% 73% 65% 0.008
Age (years) 42 (12) 39 (12) 44 (12) <0.001
Type 2 diabetes 26% 1.5% 37% <0.001
Coronary heart disease 4.3% 0.9% 5.9% 0.001
Elevated blood pressure 70% 40% 83% <0.001
Current smoking 26% 27% 26% 0.735
BMI (kg/m2) 44.7 (6.2) 44.2 (6.1) 45.0 (6.2) 0.079
Waist (cm) 133 (14) 130 (15) 134 (14) <0.001
PTH, vit D and magnesium     
PTH (pmol/l) 5.8 (2.3) 5.6 (2.3) 5.9 (2.4) 0.067
25(OH)D (nmol/l) 52 (22) 53 (20) 52 (23) 0.127
Magnesium (mmol/l) 0.84 (0.08) 0.86 (0.07) 0.84 (0.08) <0.001
Calcium (mmol/l) 2.35 (0.07) 2.35 (0.06) 2.36 (0.07) 0.392
Phosphate (mmol/l) 1.09 (0.17) 1.09 (0.15) 1.10 (0.17) 0.517
Creatinine (μmol/l) 65 (11) 65 (10) 66 (12) 0.889
Vitamin D supplement use 11% 11% 11% 1.000
HbA1c and insulin resistance     
HbA1c 6.0 (1.3) 5.3 (0.4) 6.3 (1.4) <0.001
HOMA-IR 6.3 (6.0) 3.9 (2.3) 7.5 (6.8) <0.001
Inflammation     
CRP (≥ 7 mg/l) 69% 67% 70% 0.400
Drugs     
Thiazides 14% 7% 17% <0.001
Loop diuretics 9% 4% 11% <0.001
Angiotensin II Type 1 Receptor 8% 3% 10% 0.001
Blocker or ACE-inhibitor use     
Albuminuria 11% 4% 14% <0.001
  1. Data are means (SD) for continuous variables and % for categorical variables