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Table 3 Factors associated with 25(OH)D by multiple linear regression for the period between December–March (n = 802)

From: Association between serum 25-hidroxyvitamin D concentrations and ultraviolet index in Portuguese older adults: a cross-sectional study

December – March
Independent variables Sβ (95%CI) P-value
mUVI −0.149 (−0.211; −0.087) < 0.001
Age (years) −0.210 (−0.276; −0.146) < 0.001
Residence −0.104 (−0.169; −0.041) 0.001
Household income (€/month) - ≥1000 0.147 (0.082; 0.211) < 0.001
Household income (€/month) - 500-999 0.069 (0.006; 0.132) 0.032
Alcoholic beverages consumption - Moderate 0.070 (0.009; 0.132) 0.025
Self-perceived health - Bad −0.082 (−0.144; −0.020) 0.010
Supplement intake 0.196 (0.133; 0.256) < 0.001
Undernutrition status (MNA-SF score) 0.097 (0.034; 0.159) 0.003
BMI (kg/m2) −0.164 (−0.226; −0.102) <0.001
  1. CI confidence interval, MNA®-SF Mini Nutritional Assessment® – Short Form, Standardized regression coefficient