Table 3 Sample sizes, rates, and hazard ratios for mortality from all-causes and diseases of the circulatory system among participants aged > = 20 years, National Health and Nutrition Examination Survey 1999-2002-2006
Screen time (hours per day) | |||||||
|---|---|---|---|---|---|---|---|
< 1 | 1 | 2 | 3 | 4 | > = 5 | P for trend | |
All-causes | |||||||
Unweighted no. deaths/no. at risk | 56/910 | 66/1178 | 117/2007 | 106/1360 | 67/819 | 130/1076 | -- |
Unweighted person-years | 5115 | 6777 | 11,504 | 7713 | 4611 | 5782 | -- |
Age-adjusted rate/1,000 PY (95% CI) | 8.6 (5.2, 12.1) | 8.7 (6.7, 10.8) | 8.0 (6.4, 9.6) | 10.5 (7.6, 13.4) | 8.0 (5.4, 10.7) | 13.6 (10.2, 16.9) | -- |
Model 1 (hazard ratio, 95% CI) | 1.00 | 1.03 (0.67, 1.58) | 1.04 (0.74, 1.47) | 1.41 (0.79, 2.51) | 1.11 (0.69, 1.78) | 1.84 (1.19, 2.86) | 0.001 |
Model 2 (hazard ratio, 95% CI) | 1.00 | 1.04 (0.69, 1.57) | 1.03 (0.73, 1.46) | 1.40 (0.80, 2.44) | 1.03 (0.65, 1.63) | 1.74 (1.14, 2.64) | 0.001 |
Model 3 (hazard ratio, 95% CI) | 1.00 | 1.07 (0.70, 1.63) | 1.05 (0.74, 1.48) | 1.35 (0.77, 2.37) | 0.97 (0.61, 1.55) | 1.55 (1.00, 2.40) | 0.024 |
Model 4 (hazard ratio, 95% CI) | 1.00 | 1.18 (0.76, 1.85) | 1.16 (0.81, 1.67) | 1.45 (0.83, 2.55) | 1.02 (0.64, 1.63) | 1.41 (0.90, 2.19) | 0.173 |
Model 5 (hazard ratio, 95% CI) | 1.00 | 1.16 (0.72, 1.85) | 1.14 (0.80, 1.61) | 1.40 (0.79, 2.47) | 1.00 (0.62, 1.62) | 1.30 (0.82, 2.05) | 0.336 |
Model 6 (hazard ratio, 95% CI) | 1.00 | 1.10 (0.69, 1.73) | 1.09 (0.78, 1.53) | 1.38 (0.78, 2.42) | 1.02 (0.64, 1.61) | 1.33 (0.85, 2.09) | 0.181 |
Model 5: Exclude deaths in year 1 | 1.00 | 1.11 (0.69, 1.79) | 1.16 (0.81, 1.66) | 1.40 (0.77, 2.55) | 0.95 (0.58, 1.56) | 1.34 (0.81, 2.21) | 0.307 |
Diseases of the circulatory system | |||||||
Unweighted no. deaths/no. at risk | 23/910 | 23/1178 | 34/2007 | 40/1360 | 24/819 | 46/1076 | -- |
Unweighted person-years | 5115 | 6777 | 11,504 | 7713 | 4611 | 5782 | -- |
Age-adjusted rate/1,000 PY (95% CI) | 3.2 (2.0, 4.4) | 3.5 (1.6, 5.4) | 1.9 (1.1, 2.7) | 3.5 (2.1, 4.9) | 2.2 (1.2, 3.3) | 4.1 (2.3, 6.0) | -- |
Model 1 (hazard ratio, 95% CI) | 1.00 | 1.09 (0.54, 2.19) | 0.63 (0.35, 1.14) | 1.14 (0.59, 2.21) | 0.77 (0.38, 1.58) | 1.37 (0.77, 2.44) | 0.167 |
Model 2 (hazard ratio, 95% CI) | 1.00 | 1.13 (0.57, 2.25) | 0.66 (0.36, 1.20) | 1.19 (0.60, 2.34) | 0.77 (0.36, 1.61) | 1.33 (0.72, 2.45) | 0.263 |
Model 3 (hazard ratio, 95% CI) | 1.00 | 1.18 (0.56, 2.45) | 0.70 (0.37, 1.32) | 1.24 (0.60, 2.56) | 0.76 (0.36, 1.62) | 1.29 (0.64, 2.57) | 0.428 |
Model 4 (hazard ratio, 95% CI) | 1.00 | 1.42 (0.64, 3.17) | 0.82 (0.42, 1.59) | 1.42 (0.61, 3.30) | 0.84 (0.38, 1.83) | 1.20 (0.58, 2.49) | 0.858 |
Model 5 (hazard ratio, 95% CI) | 1.00 | 1.35 (0.59, 3.07) | 0.83 (0.42, 1.64) | 1.50 (0.65, 3.46) | 0.88 (0.38, 2.05) | 1.14 (0.51, 2.54) | 0.909 |
Model 6 (hazard ratio, 95% CI) | 1.00 | 1.14 (0.56, 2.32) | 0.77 (0.43, 1.38) | 1.39 (0.69, 2.80) | 0.88 (0.39, 1.99) | 1.13 (0.57, 2.24) | 0.653 |
Model 5: Exclude deaths in year 1 | 1.00 | 1.18 (0.59, 2.38) | 0.82 (0.38, 1.73) | 1.44 (0.58, 3.58) | 0.61 (0.24, 1.50) | 1.12 (0.47, 2.65) | 0.990 |