Combined television viewing and computer use and mortality from all-causes and diseases of the circulatory system among adults in the United States
Combined television viewing and computer use and mortality from all-causes and diseases of the circulatory system among adults in the United States
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DOI：
10.1186/1471-2458-12-70
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发表时间：
2012-01-23
影响因子：
4.5
通讯作者：
Ford, Earl S.
中科院分区：
文献类型：
--
作者：
Ford, Earl S.
背景：看电视和使用电脑是越来越常见的久坐行为。是否延长屏幕时间增加死亡率的风险仍然不确定。方法：7,350名年龄≥ 20岁的成年人参加了1999-2002年的国家健康和营养检查调查，并随访至2006年的死亡率进行了检查。参与者被问到一个关于他们在过去30天里花在看电视、视频或使用电脑上的时间的问题。结果：在平均5.8年的随访中，542名参与者死亡。在基线时，12.7%的参与者报告每天看电视或使用电脑少于1小时，16.4%的人每天看电视或使用电脑1小时，27.8%的人每天看电视或使用电脑2小时，18.7%的人每天看电视或使用电脑3小时，10.9%的人每天看电视或使用电脑4小时，13.5%的人每天看电视或使用电脑5小时或以上。经过广泛调整后，顶级暴露类别的全因死亡率风险比为1.30（95%置信区间：0.82，2.05）。未发现暴露类别之间的显著趋势。屏幕时间的量也没有显着相关的死亡率从循环系统diseases of the circulationsystem.Conclusions：在本研究中，屏幕时间没有显着预测死亡率从所有原因和循环系统疾病。
Background: Watching television and using a computer are increasingly common sedentary behaviors. Whether or not prolonged screen time increases the risk for mortality remains uncertain.Methods: Mortality for 7,350 adults aged >= 20 years who participated in the National Health and Nutrition Examination Survey during 1999-2002 and were followed through 2006 was examined. Participants were asked a single question about the amount of time they spent watching television or videos or using a computer during the past 30 days.Results: During a median follow-up of 5.8 years, 542 participants died. At baseline, 12.7% of participants reported watching television or using a computer less than 1 h per day, 16.4% did so for 1 h, 27.8% for 2 h, 18.7% for 3 h, 10.9% for 4 h, and 13.5% for 5 or more h. After extensive adjustment, the hazard ratio for all-cause mortality for the top category of exposure was 1.30 (95% confidence interval: 0.82, 2.05). No significant trend across categories of exposure was noted. The amount of screen time was also not significantly related to mortality from diseases of the circulatory system.Conclusions: In the present study, screen time did not significantly predict mortality from all-causes and diseases of the circulatory system.