Research Article
Is There a Reversal in the Effect of Obesity on Mortality in Old Age?
Table 3
Cox Regression Models Predicting Mortality at 20-year followup by BMI, and age, controlling for smoking status (Ever versus Never).
| | Full sample | Age groups | | | | | | 75–84 year olds | 85–94 years old | | CD and NH residents | CD | CD and NH residents | CD | CD and NH residents | CD | | | | | | | | | HR | CI | HR | CI | HR | CI | HR | CI | HR | CI | HR | CI |
| Background | | | | | | | | | | | | | Age | | 1.055–1.082 | | 1.053–1.081 | | 1.047–1.108 | | 1.045–1.108 | | 1.025–1.100 | | 1.025–1.107 | Gender () | | 1.104–1.453 | | 1.092–1.465 | | 1.195–1.709 | | 1.202–1.746 | 1.087 | .871–1.357 | 1.051 | 0.823–1.342 |
| Origin | | | | | | | | | | | | | East | .849 | 0.715–1.008 | 0.867 | 0.723–1.040 | 0.960 | 0.767–1.201 | 0.993 | .788–1.252 | | 0.559–0.955 | | 0.533–0.958 | West | 1.030 | 0.887–1.197 | 1.042 | 0.887–1.224 | 1.024 | 0.846–1.240 | 1.033 | .844–1.264 | 1.028 | 0.805–1.313 | 1.033 | 0.786–1.358 | Years of education | 0.994 | 0.982–1.007 | 0.996 | 0.982–1.009 | 0.998 | 0.981–1.015 | 0.999 | .981–1.017 | 0.992 | 0.974–1.011 | 0.993 | 0.972–1.015 | Additional income | 0.940 | 0.829–1.070 | 0.932 | 0.811–1.071 | | 0.711–1.003 | | 0.717–1.026 | 1.040 | 0.845–1.279 | 0.993 | 0.791–1.247 | Had children | | 0.570–0.872 | | 0.538–0.869 | | .504–.867 | | 0.468–0.844 | 0.791 | 0.554–1.130 | 0.780 | 0.506–1.204 | Smoking status (1= ever) | 1.106 | 0.969–1.262 | 1.103 | 0.959–1.269 | | 0.974–1.364 | 1.151 | 0.966–1.371 | 1.015 | 0.816–1.263 | 0.993 | 0.781–1.263 |
| BMI | | | | | | | | | | | | | Obese (>30) | 1.122 | 0.934–1.347 | 1.096 | .902–1.332 | | 1.022–1.631 | | 1.032–1.676 | 0.946 | 0.704–1.273 | 0.853 | 0.614–1.187 | Underweight (<22) | | 1.199–1.661 | | 1.179–1.671 | | 1.005–1.597 | | 1.025-1.657 | | 1.163–1.871 | | 1.075–1.824 | | | | | | | | | | | | | | χ 2 () | | | | | | | | | | | | |
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.. HR= Hazard Ratio= Exp (b); CI= Confidence Interval.
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