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. 2018 Aug 28;13(8):e0198650. doi: 10.1371/journal.pone.0198650

Table 3. Association between waist circumference, body roundness index and body shape index with 25(OH)D quartiles.

Multinomial logistic regression models. Reference category was the fourth quartile of serum 25(OH)D (23.0–178.1 ng/mL).

25(OH)D
Q1
(3.0–8.7 ng/mL)
Q2
(8.8–14.3 ng/mL)
Q3
(14.4–22.9 ng/mL)
Crude
OR (95% CI)
Adjusted
OR (95% CI)
Crude
OR (95% CI)
Adjusted
OR (95% CI)
Crude
OR (95% CI)
Adjusted
OR (95% CI)
Waist circumference (WC)
   W: ≤80cm; M: ≤94cm 1.00 1.00 1.00 1.00 1.00 1.00
   W: 81–88 cm; M: 95–102 cm 1.18 (0.67–2.07) 1.31 (0.69–2.48) 1.17 (0.69–1.96) 1.27 (0.73–2.20) 1.14 (0.72–1.80) 1.23 (0.76–1.98)
   W: >88 cm; M: >102 cm 3.67 (2.26–5.95)* 3.46 (1.95–6.15)* 2.76 (1.75–4.34)* 2.61 (1.58–4.29)* 1.51 (1.00–2.29) 1.56 (0.99–2.45)
   P for trend <0.001 <0.001 <0.001 <0.001 0.019 0.041
Body roundness index (BRI)
   Q1 (1.93–5.09) 1.00 1.00 1.00 1.00 1.00 1.00
   Q2 (5.10–6.10) 1.78 (1.14–2.78) 1.69 (1.02–2.79) 1.68 (1.12–2.52) 1.51 (0.98–2.31) 1.27 (0.87–1.86) 1.15 (0.77–1.71)
   Q3 (6.11–7.49) 2.88 (1.85–4.50)* 2.26 (1.36–3.75) 2.48 (1.64–3.75)* 2.14 (1.37–3.34) 1.56 (1.05–2.32) 1.45 (0.95–2.20)
   Q4 (7.50–15.83) 6.91 (4.41–10.80)* 4.35 (2.60–7.29)* 3.35 (2.16–5.20)* 2.51 (1.55–4.05)* 1.42 (0.91–2.23) 1.31 (0.81–2.12)
   P for trend <0.001 <0.001 <0.001 <0.001 0.090 0.218
Body shape index (ABSI)
   Q1 (0.0643–0.0803) 1.00 1.00 1.00 1.00 1.00 1.00
   Q2 (0.0804–0.0840) 1.55 (0.99–2.42) 1.59 (0.96–2.63) 1.31 (0.89–1.95) 1.33 (0.87–2.04) 0.93 (0.63–1.37) 0.91 (0.60–1.38)
   Q3 (0.0841–0.0874) 3.55 (2.27–5.56)* 4.03 (2.37–6.86)* 1.81 (1.19–2.76) 1.99 (1.23–3.21) 1.46 (0.96–2.20) 1.40 (0.88–2.22)
   Q4 (0.0875–0.1034) 3.17 (2.06–4.88)* 3.17 (1.86–5.38)* 1.30 (0.86–1.97) 1.29 (0.79–2.09) 0.95 (0.63–1.44) 0.87 (0.54–1.39)
   P for trend <0.001 <0.001 0.115 0.240 0.846 0.691

OR: Odds ratio; CI: Confidence interval; W: Women; M: Men.

Adjusted for sex, age, educational level, alcohol consumption, smoking, skin phenotype, vitamin D supplementation, season of blood collection and cognitive function and frailty status. Waist circumference was further adjusted for height. Bold text indicates a statistically significant difference with a p-value less than 0.05.

Missing data in 10 individuals.

*p<0.001