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Table 2 In-sample performance of the four obesity measures in discriminating between oldest-old adults with/without mobility disability, adjusted for sex

From: Visceral fat area is the measure of obesity best associated with mobility disability in community dwelling oldest-old Chinese adults

Measure of obesity In-sample AUCROC (95% CI) P-value Bonferroni-adjusted P-value
Linear models a
 Body mass index 0.68 (0.64, 0.72) Ref. Ref.
 Waist circumference 0.70 (0.65, 0.74) 0.040 0.12
 Percent body fat 0.70 (0.66, 0.74) 0.025 0.075
 Visceral fat area 0.71 (0.67, 0.75) < 0.001 0.002
Restricted cubic spline models b
 Body mass index 0.68 (0.64, 0.73) Ref. Ref.
 Waist circumference 0.70 (0.65, 0.74) 0.28 0.84
 Percent body fat 0.70 (0.66, 0.74) 0.079 0.24
 Visceral fat area 0.71 (0.67, 0.75) 0.024 0.072
  1. AUCROC area under the receiver operating characteristic curve, CI confidence interval
  2. a Obesity measures were modelled on a continuous linear scale
  3. b Obesity measures were modelled with a restricted cubic spline with three knots at its 10th, 50th, and 90th percentiles