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Table 2 Adjusted hazard ratios for all-cause mortality, by BMI category

From: Mortality risk associated with underweight: a census-linked cohort of 31,578 individuals with up to 32 years of follow-up

  Body mass index category (kg/m2)
  <18.5 18.5- <25 25- <30 ≥30
  HR (95%CI) HR HR (95% CI) HR (95% CI)
Pooled data
Deaths (n) 121 2551 2209 813
Model 1 1.39 (1.16-1.67) 1 1.04 (0.98-1.10) 1.36 (1.26-1.48)
Model 2 1.38 (1.15-1.66) 1 1.04 (0.99-1.11) 1.38 (1.28-1.50)
Model 3 1.35 (1.12-1.62) 1 1.03 (0.98-1.10) 1.34 (1.24-1.45)
Model 4 1.40 (1.17-1.68) 1 1.03 (0.97-1.09) 1.35 (1.25-1.47)
Model 5 1.37 (1.14-1.65) 1 1.02 (0.97-1.09) 1.32 (1.22-1.43)
Measured BMI data
Deaths (n) 54 1452 1433 585
Model 1 1.16 (0.88-1.52) 1 1.02 (0.95-1.10) 1.35 (1.22-1.49)
Model 2 1.16 (0.88-1.52) 1 1.04 (0.96-1.12) 1.38 (1.25-1.53)
Model 3 1.15 (0.87-1.51) 1 1.02 (0.95-1.10) 1.33 (1.20-1.46)
Model 4 1.17 (0.89-1.54) 1 1.02 (0.95-1.10) 1.35 (1.22-1.49)
Model 5 1.16 (0.88-1.53) 1 1.01 (0.94-1.09) 1.31 (1.18-1.44)
Self-reported BMI data
Deaths (n) 67 1099 776 228
Model 1 1.64 (1.28-2.10) 1 1.06 (0.96-1.16) 1.37 (1.19-1.58)
Model 2 1.61 (1.25-2.06) 1 1.06 (0.97-1.17) 1.38 (1.19-1.59)
Model 3 1.56 (1.21-2.00) 1 1.05 (0.96-1.16) 1.34 (1.16-1.55)
Model 4 1.65 (1.28-2.11) 1 1.05 (0.95-1.15) 1.35 (1.17-1.56)
Model 5 1.59 (1.24-2.05) 1 1.04 (0.95-1.15) 1.32 (1.14-1.53)
  1. Model 1: adjusted for age, age2, sex, and study waves. Model 2: Model 1 + adjusted for smoking status. Model 3: Model 2 + adjusted for lifestyle variables: sports frequency + healthy eating. Model 4: Model 2 + adjusted for educational level. Model 5: Model 3 + Model 4.
  2. 30,547 participants (25–74 years at baseline) of the Swiss MONICA, NRP1A, SOMIPOPS and SHS 92/93.
  3. Measured BMI Data: Swiss MONICA + NRP 1A: 16,348 participants. Self-reported BMI Data: SOMIPOPS + SHS 92/93: 14,199 participants.