Worrall G, Briffett E, Moulton N
Department of Family Medicine, Memorial University of Newfoundland.
Can Fam Physician. 1994 Jan;40:61-4.
A cross-sectional survey from the Centre for Rural Health Studies of 210 elderly clients in a rural home care program found that 18.1% had severe or moderate cognitive impairment, yet only 6.6% of 167 elderly community residents living independently in a rural community had similar impairment. While the difference was significant, our methodology could not determine whether a causal association existed.
农村健康研究中心对一项农村家庭护理项目中的210名老年客户进行的横断面调查发现，18.1%的人有重度或中度认知障碍，然而，在一个农村社区独立生活的167名老年社区居民中，只有6.6%的人有类似障碍。虽然差异显著，但我们的方法无法确定是否存在因果关系。
