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Table 3 The joint analysis of initial BMI and WC change trajectories on risk of mortality

From: Long-term waist circumference trajectories and body mass index with all-cause mortality in older Chinese adults: a prospective nationwide cohort study

Group

Crude model

Adjusted model

HR(95%CI)

P

HR(95%CI)

P

Non-overweight

 Loss

1.67(1.20–2.33)

0.002

1.35 (0.93–1.94)

0.113

 Stable

Ref

 

Ref

 

 Moderate gain

1.09(0.87–1.36)

0.446

1.06 (0.83–1.35)

0.636

 Substantial gain

1.63(1.20–2.21)

0.002

1.54 (1.10–2.17)

0.013

Overweight and obesity

 Loss

1.19(0.81–1.73)

0.378

2.43 (1.41–4.19)

0.001

 Stable

0.93(0.71–1.21)

0.580

1.67 (1.07–2.60)

0.025

 Moderate gain

0.87(0.61–1.25)

0.460

1.58(0.95–2.63)

0.080

 Substantial gain

0.97(0.80–1.16)

0.704

1.36(0.60–3.09)

0.458

  1. Data shown as HR (95%CI). Non-overweight was defined as BMI at baseline < 24.0 kg/m2., Overweight was defined as BMI at baseline > 24.0 kg/m2. HR Hazard ration. CI Confidence interval. WC stable trajectory and initial non-overweight was the reference group
  2. Crude model adjusted no covariate; adjusted model included age, gender, enrollment year, education and income level, smoking and drinking status, physical activity levels, initial SBP/DBP, dietary energy intake and chronic diseases
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