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Table 5 aOnset median age (MA) of chronic diseases and hazard ratio (HR) with different levels/years of PA

From: Physical activity and chronic diseases among older people in a mid-size city in China: a longitudinal investigation of bipolar effects

  Model 1c: PA level Model 2d: Cumulative PA years N of obs. N of sub.
NPA IPA RPA 0 1 2 3 4
All Onset MA 56 63***e 65*** 61 62 63** 66*** 66*** 3414 1657
HRb 1 0.31 0.4 1 0.8 0.63 0.46 0.21   
Obesity MA 56 64*** 66*** 61 61 64 63 66 540 257
HR 1 0.43 0.28 1 0.68 0.83 1.06 0.96   
Hypertension MA 55 62*** 67*** 60 61* 62** 65*** 67*** 733 376
HR 1 0.26 0.27 1 0.59 0.41 0.31 0.14   
Diabetes MA 55 66*** 63** 63 60* 64*** 65*** 68*** 1069 472
HR 1 0.17 0.6 1 0.61 0.46 0.27 0.11   
Hyperlipidemia MA 56 63*** 66*** 62 64** 63 66* 66*** 1143 515
HR 1 0.21 0.28 1 0.57 0.77 0.52 0.31   
Cardiovascular diseases MA HR 56 71*** 61** 62 63** 62*** 66*** 68*** 1965 849
1 0.17 0.71 1 0.67 0.53 0.36 0.16   
Liver and biliary system diseases MA 57 66*** 62*** 62 63 63 66 66 675 292
HR 1 0.13 0.44 1 0.97 1.59 1.49 0.95   
Kidney function disorder MA 59 74*** 65 68 67 67 68* 68** 94 39
HR 1 0.17 0.8 1 0.7 0.52 0.3 0.15   
  1. aTwo Cox proportional hazards models with time-varying covariates were used to examine the impact of PA on the onset of chronic diseases controlling for gender, education level, income level and other types of chronic diseases
  2. bFor each disease, the two rows report the dependent variables-onset of different diseases by onset median age (MA) and hazard ratio (HR)
  3. cIn model 1, the PA level was the independent variable (NPA: sedentary; IPA: irregular physical activity; RPA: Regular physical activity)
  4. dIn model 2 the cumulated PA years was the independent variable
  5. e*p < 0.05, **p < 0.01, ***p < 0.001