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Table 4 Population attributable fractions estimated using body mass index at time of survey and body mass index at maximum

From: Using maximum weight to redefine body mass index categories in studies of the mortality risks of obesity

 

BMI, time of survey

BMI, maximum

BMI category (kg/m2)

Pd (%)

HR

PAF (%)

Pd (%)

HR

PAF (%)

Normal

29.77

1.00

0

11.76

1.00

0

Overweight

36.64

0.98

-0.75

32.92

1.28

7.20

Obese class 1

21.11

1.18

3.22

31.50

1.67

12.64

Obese class 2

12.47

1.31

2.95

23.82

2.15

12.74

Total

  

5.42

  

32.58

  1. BMI: body mass index; Pd: proportion exposed among decedents (%); HR: hazard ratio; PAF: population attributable fraction. See Table 1 for definitions of BMI categories. The PAF for each exposure category is calculated using Equation 1 in the text. PAFs are summed across exposure categories to obtain the overall PAF. Calculations are based on the sample of never-smoking adults ages 50-84.
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Population Health Metrics

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