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Table 4 Logistic regression models regarding 25(OH)D levels, with the following independent variables: sex (male/female), age (<50/≥50 years), wearing of clothing which limits sunlight exposure (yes/no), and household location (urban/semiurban/rural).

From: Vitamin D status among adults in the Aegean region of Turkey

  Model I: (vitamin D deficiency or insufficiency vs sufficiency)   Model II: (vitamin D deficiency vs sufficiency)  
  Odds ratio (95%CI) p value Odds ratio (95% CI) p value
Age (years)     
<50 (reference) 1   1  
≥50 0.55 (0.28-1.09) 0.090 0.56 (0.28-1.13) 0.107
Gender     
Male (reference) 1   1  
Female 1.28 (0.63-2.57) 0.484 1.47 (0.72-3.00) 0.282
Wearing clothes which restrict exposure to sunlight     
Yes 2.90 (1.45-5.81) 0.003 2.63 (1.31-5.28) 0.006
No (reference) 1   1  
Area of residence     
Semiurban (reference) 1   1  
Urban 2.47 (1.17-5.21) 0.017 2.42 (1.14-5.12) 0.020
Rural 4.13 (0.91-18.58) 0.064 4.19 (0.93-18.91) 0.062
r2 0.091   0.098