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Table 2 The associations between serum level of 25(OH) D (nmol/L) and the risk of frailty

From: Plasma 25-hydroxyvitamin D level and the risk of frailty among Chinese community-based oldest-old: evidence from the CLHLS study

VariablesModel 1 aModel 2 bModel 3 cModel 4 d, e
Categories
  ≤ 26.134.964 (3.332,7.396) ***3.472 (2.273,5.303) ***3.437 (2.248,5.255) ***3.239 (2.113,4.967) ***
 26.13–35.892.822 (1.881,4.234) ***2.414 (1.571,3.710) ***2.420 (1.573,3.723) ***2.341 (1.519,3.609) ***
 35.89–50.001.835 (1.204,2.797) **1.526 (1.102, 2.683) *1.722 (1.102,2.692) *1.703 (1.088,2.664) *
  > 50.00referencereferencereferencereference
  1. a Unadjusted model, OR (95% CI)
  2. b Adjusted for socio-demographics (age, sex, marital status, residence, education level, and co-residence), OR (95% CI)
  3. c Adjusted for socio-demographics (age, sex, marital status, residence, education level, and co-residence) and health characteristics (smoking, drinking, regular exercise, hypertension, diabetes mellitus, heart diseases, cerebrovascular diseases, and respiratory diseases), OR (95% CI)
  4. d Adjusted for socio-demographics (age, sex, marital status, residence, education level, and co-residence), health characteristics (smoking, drinking, regular exercise, hypertension, diabetes mellitus, heart diseases, cerebrovascular diseases, and respiratory diseases) and confounding biomarkers (CRP, ALB, CHO, CREA, HDLC, LDLC, TG, SOD, MDA, WBC, and HGB), OR (95% CI)
  5. ep-value for the Hosmer-Lemeshow test was 0.653; prediction in accuracy was 74.3% in model 4
  6. * < 0.05, ** < 0.01, *** < 0.001
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