Skip to main content

Table 2 The association between plasma vitamin D concentrations and frailty

From: Functional dentition is a modifier of the association between vitamin D and the frailty index among Chinese older adults: a population-based longitudinal study

 

Unadjusted Model

Model 1

Model 2

Model 3

OR (95% CI)

P value

OR (95% CI)

P value

OR (95% CI)

P value

OR (95% CI)

P value

Quartiles of 25(OH)Da

Quartile 1 (< 31.78 nmol/L)

3.04 (1.94, 4.77)

< 0.001

2.56 (1.53, 4.28)

< 0.001

2.46 (1.39, 4.36)

0.002

2.45 (1.38, 4.35)

0.002

Quartile 2 (31.78–43.65 nmol/L)

1.63 (1.01, 2.63)

0.044

1.81 (1.06, 3.09)

0.030

1.69 (0.94, 3.01)

0.079

1.68 (0.94, 3.00)

0.082

Quartile 3 (43.65–56.61 nmol/L)

1.33 (0.81, 2.17)

0.256

1.47 (0.85, 2.55)

0.172

1.33 (0.75, 2.37)

0.337

1.32 (0.74, 2.36)

0.342

Quartile 4 (≥56.61 nmol/L)

Reference

 

Reference

 

Reference

 

Reference

 

P for trend

< 0.001

0.003

0.013

0.014

  1. 25(OH) D 25-Hydroxyvitamin D, OR Odds ratio, CI Confidence interval
  2. Notes: Model 1: adjusted for age, sex, and baseline frailty status (prefrailty vs. nonfrailty);
  3. Model 2: further adjusted for residence, marital status, education level, economic independence, smoking status, drinking status, regular exercise, sleep time, body mass index, dentition status, calf circumference, and season of blood draw;
  4. Model 3: further adjusted for albumin and high-sensitivity C-reactive protein
  5. aSample sizes: quartiles 1–4: 268, 269, 268, and 269, respectively