Salive M E, Guralnik J M, Glynn R J
Epidemiology, Demography and Biometry Program, National Institute on Aging, National Institutes of Health, Bethesda, MD 20892.
Am J Public Health. 1993 Feb;83(2):265-7. doi: 10.2105/ajph.83.2.265.
We examined mortality associated with handedness in two ways. A simulation using national data suggests that lower mean age at death among left-handed persons, previously offered as evidence of higher mortality, can be explained exclusively by the age distribution of laterality. Second, empiric evidence from a 6-year cohort study of 3774 older adults from East Boston, Massachusetts, demonstrates that left-handedness is not associated with mortality (relative odds = 1.04, 95% confidence interval = 0.79, 1.36).
我们从两个方面研究了与用手习惯相关的死亡率。一项使用全国数据的模拟研究表明，左撇子人群较低的平均死亡年龄（此前被作为较高死亡率的证据）完全可以由用手习惯的年龄分布来解释。其次，对马萨诸塞州东波士顿3774名老年人进行的为期6年的队列研究的实证证据表明，左撇子与死亡率无关（相对比值 = 1.04，95%置信区间 = 0.79, 1.36）。
