Skip to main content

Table 1 Comparison between selected and unselected participants

From: Vitamin D, parathyroid hormone and metabolic syndrome – the PORMETS study

Variables Unselected participants Selected participants p valuea
Gender (n)
 Women 2069 286  
 Men 1526 214 0.881
Age – years [median (P25, P75)] 54 (41, 66) 53 (41, 67) 0.856
Education level – years [median (P25, P75)] 4 (4, 10) 6 (4, 10) 0.252
Alcohol intake (n)
 Non-drinker 1618 229  
 Former drinker 124 18  
 Occasional drinker 934 128  
 Daily drinker 892 123 0.990
Smoking habits (n)
 Non-smoker 2486 358  
 Former smoker 521 66  
 Smoker 529 70 0.597
Physical exercise (n)
 No 2592 352  
 Yes 954 139 0.597
UV exposure (n)
 Lower 1971 283  
 Higher 1555 217 0.768
Weight – cm [median (P25, P75)] 71.0 (62.5, 80.5) 71.0 (61.0, 80.0) 0.704
Height – cm [median (P25, P75)] 162.0 (155.5, 169.0) 162.0 (155.0, 169.0) 0.745
BMI – Kg/m2 [median (P25, P75)] 27.0 (24.0, 30.0) 27.1 (24.1, 29.8) 0.813
WC – cm [median (P25, P75)] 93.4 (85.0, 101.5) 93.5 (86.0, 102.0) 0.399
Systolic BP – mmHg [median (P25, P75)] 130 (116, 145) 131 (119, 147) 0.038
Diastolic BP – mmHg [median (P25, P75)] 79 (70, 86) 80.0 (70, 87) 0.073
Glucose – mg/dL [median (P25, P75)] 85 (77, 97) 85 (77, 97) 0.947
Insulin - μU/mL [median (P25, P75)] 7.6 (5.1, 11.4) 8.0 (5.3, 12.2) 0.040
HOMA – median (P25, P75) 1.6 (1.0, 2.6) 1.7 (1.1, 2.9) 0.119
hs-CRP - mg/L [median (P25, P75)] 0.15 (0.07, 0.36) 0.16 (0.08, 0.39) 0.626
Cholesterol – mg/dL [median (P25, P75)] 206 (179, 233) 204 (180, 233) 0.611
Triglycerides – mg/dL [median (P25, P75)] 106 (78, 147) 104 (76, 143) 0.242
HDL-cholesterol – mg/dL [median (P25, P75)] 47 (39, 55) 47 (39, 55) 0.553
MetS (n)
 No 2086 307  
 Yes 1403 191 0.428
BP component (n)
 No 1352 177  
 Yes 2172 322 0.212
WC component (n)
 No 1812 253  
 Yes 1702 247 0.686
Glycemia component (n)
 No 2655 382  
 Yes 822 112 0.635
HDL-cholesterol component (n)
 No 1566 224  
 Yes 1935 276 0.977
Triglycerides component (n)
 No 2615 383  
 Yes 878 117 0.401
  1. SD standard deviation, UV ultraviolet, BMI body mass index, WC waist circumference, BP blood pressure, HOMA homeostatic model assessment, hs-CRP high sensitivity C-reactive protein, MetS metabolic syndrome
  2. aChi-square test/Fisher’s exact test or Mann-Whitney U test p value