Manning W G, Wells K B, Benjamin B
Am J Psychiatry. 1987 Mar;144(3):283-7. doi: 10.1176/ajp.144.3.283.
The authors compared the use of outpatient mental health services in a health maintenance organization (HMO) and fee-for-service plans over a 5-year period, using data from a randomized controlled trial. In any given year, enrollees in the HMO and a fee-for-service plan with identical benefits were equally likely to visit a mental health specialist. Over several years, the HMO enrollees were about 50% more likely ever to visit a mental health specialist; fee-for-service enrollees were more likely to receive mental health care in more than 1 study year.
作者利用一项随机对照试验的数据，比较了健康维护组织（HMO）和按服务收费计划在5年期间门诊心理健康服务的使用情况。在任何给定年份，HMO的参保者和具有相同福利的按服务收费计划的参保者就诊心理健康专家的可能性相同。几年下来，HMO的参保者就诊心理健康专家的可能性要高出约50%；按服务收费计划的参保者在超过1个研究年度中接受心理健康护理的可能性更大。
