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Table 6 Likelihood of having depression according to vitamin D status in study population: the Third National Health and Nutrition Examination Survey¹

From: Serum vitamin D concentrations are related to depression in young adult US population: the Third National Health and Nutrition Examination Survey

Characteristic Major depression OR (95% CI) (n = 7877) Depression >2 y OR (95% CI) (n = 7970) Current depression OR (95% CI) (n = 1221)
Unadjusted analysis for serum vitamin D
   Deficient (<50 nmol/L) 0.95 (0.65 - 1.37) 1.43 (1.09 - 1.86) 2.01 (1.25 - 3.24)
   Insufficient (50-75 nmol/L) 0.92 (0.66 - 1.26) 1.07 (0.78 - 1.46) 0.75 (0.44 - 1.27)
   Sufficient (>75 nmol/L) 2 1.0 1.0 1.0
   P-Value 3 0.86 0.022 <0.001
Multivariate adjusted analysis for serum vitamin D 4
   Deficient (<50 nmol/L) 1.17 (0.71 - 1.90) 0.84 (0.57 - 1.23) 1.85 (0.90 - 3.81)
   Insufficient (50-75 nmol/L) 0.93 (0.62 - 1.40) 0.77 (0.53 - 1.13) 0.70 (0.38 - 1.29)
   Sufficient (>75 nmol/L) 2 1.0 1.0 1.0
   P-Value 3 0.60 0.39 0.021
  1. 1Depression was assessed using the Diagnostic Interview Schedule developed by the National Institute of Mental Health. Odds ratios and 95% confidence intervals from the logistic regression analysis
  2. 2 Referent category
  3. 3 Significance for the Wald F in the multivariate logistic regression
  4. 4 Logistic regression analysis was adjusted for sex, race-ethnicity, age, geographical location, urbanization, vitamin/mineral supplement use, prescription medicine use, poverty income ratio, body mass index, and serum creatinine