Coulter A, McPherson K
Br Med J (Clin Res Ed). 1985 Jul 20;291(6489):183-7. doi: 10.1136/bmj.291.6489.183.
The surgical experience of a sample of people aged 40-64 randomly selected from general practice lists was elicited by means of a postal questionnaire and the results examined in relation to two indicators of socioeconomic status. Eighty per cent of the sample had had one or more surgical operations and women had a higher mean number of operations than men. Those in the more advantaged groups had a higher mean number of operations than those in the less advantaged groups. This difference was, however, mainly accounted for by operations carried out in childhood before the establishment of the National Health Service and by private sector surgery.
通过邮政问卷调查，了解了从普通医疗名单中随机抽取的40至64岁人群的手术经历，并根据社会经济地位的两个指标对结果进行了分析。80%的样本进行过一次或多次手术，女性的平均手术次数高于男性。较富裕群体的平均手术次数高于较贫困群体。然而，这种差异主要是由国民医疗服务体系建立之前儿童时期进行的手术以及私立部门的手术造成的。
