Table 3.

Association of physical activity and TV watching with incident CKD

	Model 1 HR (95% CI)	Model 2 HR(95% CI)	Model 3 HR(95% CI)	Model 4 HR(95% CI)
Physical Activity (kcal/kg/wk)
0–48 (N=808)	1.00	1.00	1.00	1.00
48–93 (N=813)	1.07 (0.92, 1.24)	1.08 (0.93, 1.25)	1.06 (0.91, 1.24)	1.07 (0.92, 1.24)
>93 (N=814)	1.01 (0.87, 1.19)	1.04 (0.89, 1.21)	1.03 (0.88, 1.21)	1.05 (0.90, 1.23)
Television (hr/day)
<2 (N=375)	1.00	1.00	1.00	1.00
2–3 (N=1,188)	1.19 (0.97, 1.45)	1.18 (0.97, 1.44)	1.18 (0.96, 1.44)	1.17 (0.96, 1.44)
>3 (N=872)	1.38 (1.13, 1.69)	1.36 (1.11, 1.66)	1.34 (1.09, 1.65)	1.34 (1.09, 1.65)

Model 1 = age, baseline GFR, sex, race, smoking status, study site, hypertension medication use

Model 2 = Model 1 + CHD, heart failure, diabetes status

Model 3 = Model 2 + pulse pressure, BMI, HDL, triglycerides, total cholesterol, CRP

Model 4 = Model 3 + television watching/physical activity