Table 2. Adjusted Hazard Ratios from Weighted Cox Model, NHANES III-NHANES 2009–2010, United States.
| Model 1 a | Model 2b | Model 3b | Model 4b | |||||
|---|---|---|---|---|---|---|---|---|
| (age as time metric) | (normal weight + overweight) | (class I obese) | (class II/III obese) | |||||
| HR | 95% CI | HR | 95% CI | HR | 95% CI | HR | 95% CI | |
| Reference BMI (18.5–29.9) | ||||||||
| Class I obese (30.0–34.9) | 1.59 | 1.05, 2.41 | ||||||
| Class II/III obese (35.0+) | 3.41 | 2.08, 5.60 | ||||||
| Class I obese * Age | 0.94 | 0.87, 1.01 | ||||||
| Class II/III obese * Age | 0.85 | 0.77, 0.92 | ||||||
| Birth cohort * Survey year | 1.02 | 1.00, 1.04 | 1.03 | 0.99, 1.07 | 1.03 | 0.98, 1.08 | ||
Abbreviations: BMI, body mass index; CI, confidence interval; HR, hazard ratio; NHANES, National Health and Nutrition Examination Survey.
a Adjusted for race, gender, country of birth, marital status, education, income, health insurance, smoking status, chronic conditions and survey year.
b Adjusted for race, gender, country of birth, marital status, education, income, health insurance, smoking status, chronic conditions, survey year and birth cohort.