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Epidemiology and Prevention
流行病学和预防医学

Television Viewing Time and Mortality
看电视时间和死亡率

Background— Television viewing time, the predominant leisure-time sedentary behavior, is associated with biomarkers of cardiometabolic risk, but its relationship with mortality has not been studied. We examined the associations of prolonged television viewing time with all-cause, cardiovascular disease (CVD), cancer, and non-CVD/noncancer mortality in Australian adults.
背景-看电视是业余时间闲坐主要的内容，其时间和反映心脏代谢风险的生化标志物有关，但它和死亡率的关系还未被研究。我们在澳大利亚人群中研究过长的电视观看时间和全因、心血管疾病、肿瘤和非心血管/非肿瘤死亡率之间的关系。

Methods and Results— Television viewing time in relation to subsequent all-cause, CVD, and cancer mortality (median follow-up, 6.6 years) was examined among 8800 adults 25 years of age in the Australian Diabetes, Obesity and Lifestyle Study (AusDiab). During 58 087 person-years of follow-up, there were 284 deaths (87 CVD deaths, 125 cancer deaths). After adjustment for age, sex, waist circumference, and exercise, the hazard ratios for each 1-hour increment in television viewing time per day were 1.11 (95% confidence interval [CI], 1.03 to 1.20) for all-cause mortality, 1.18 (95% CI, 1.03 to 1.35) for CVD mortality, and 1.09 (95% CI, 0.96 to 1.23) for cancer mortality. Compared with a television viewing time of <2 h/d, the fully adjusted hazard ratios for all-cause mortality were 1.13 (95% CI, 0.87 to 1.36) for 2 to <4 h/d and 1.46 (95% CI, 1.04 to 2.05) for 4 h/d. For CVD mortality, corresponding hazard ratios were 1.19 (95% CI, 0.72 to 1.99) and 1.80 (95% CI, 1.00 to 3.25). The associations with both cancer mortality and non-CVD/noncancer mortality were not significant.

方法和结果-在历时25年的澳大利亚糖尿病、肥胖及生活方式研究中我们对8800名成年人电视观看时间和随后全因、CVD和肿瘤死亡率的关系（平均随访年限6.6年）进行了研究。在 58087人年的随访中，有284人死亡（87人死于CVD，125人死于肿瘤）。在校正了年龄、性别、腰围和体育运动的差别后，每天看电视时间增加一小时，全因死亡的风险比是1.11 (95% 置信区间[CI], 1.03 ~ 1.20)，心血管死亡率是1.18 (95% CI, 1.03~1.35)，肿瘤死亡率是1.09 (95% CI, 0.96~1.23)。和每天小于2小时的看电视时间相比，2-4h/d和4h/d的完全校正后全因死亡风险比是1.13 (95% CI, 0.87~1.36)和1.46 (95% CI, 1.04~2.05)。CVD死亡率的相应风险比是1.19 (95% CI, 0.72~1.99) and 1.80 (95% CI, 1.00~3.25)。肿瘤死亡率和非心血管/非肿瘤死亡率之间没有显著相关性。

Conclusions— Television viewing time was associated with increased risk of all-cause and CVD mortality. In addition to the promotion of exercise, chronic disease prevention strategies could focus on reducing sitting time, particularly prolonged television viewing.
结论-看电视时间和全因及CVD死亡风险增加有关。除了增强体育锻炼之外，慢性病预防策略应集中于减少坐位时间，特别是看电视的时间。
 
Abstract 1 of 10 (Circulation. 2010;121:357-365.)
© 2010 American Heart Association, Inc.