Table 3

Association between combined BMI and WC profiles, and pre-frailty/frailty: the Tromsø study 1994–2016

LongitudinalFrailty status
RobustPre-frail/frailModel 1Model 2
(% (n))(% (n))OR (95% CI)OR (95% CI)
BMI and WC profile, baseline62.8 (870)37.2 (515)
 Normal BMI and normal WC36.1 (314)29.1 (150)Ref.Ref.
 Normal BMI and moderately high/high WC8.4 (73)8.0 (41)1.13 (0.73 to 1.74)1.01 (0.63 to 1.61)
 Overweight and normal WC15.9 (139)9.5 (49)0.74 (0.50 to 1.08)0.79 (0.53 to 1.19)
 Overweight and moderately high/high WC32.2 (280)36.5 (188)1.40 (1.07 to 1.84)1.48 (1.11 to 1.98)
 Obesity and moderately high/high WC7.4 (64)16.9 (87)2.86 (1.96 to 4.18)3.11 (2.07 to 4.70)
  • Model 1: adjusted for age at baseline. Model 2: adjusted for age, educational level, marital/cohabitation status, smoking status, alcohol intake, social support, self-perceived health and physical activity level at baseline.

  • BMI, body mass index; WC, waist circumference.