Kay D W, Cooper A F, Garside R F, Roth M
Br J Psychiatry. 1976 Sep;129:207-15. doi: 10.1192/bjp.129.3.207.
Various premorbid characteristics of a group of patients aged 50 or over suffering from paranoid psychoses (N = 54) were compared with those of patients of similar age suffering from affective psychoses (N = 57). (The diagnoses were those of the consultants.) The presence of deafness was investigated in the manner described by Cooper et al(1974). Using the discriminant function method, the diagnostic groups were highly significantly differentiated by six independent variables, which in combination predicted 40 per cent of the variance. These were: a 'schizoid personality' factor, the number of surviving children, precipitating events, deafness, family history and social class.
将一组50岁及以上患有偏执性精神病的患者（N = 54）的各种病前特征与一组年龄相仿的患有情感性精神病的患者（N = 57）的病前特征进行了比较。（诊断由会诊医生做出。）按照库珀等人（1974年）所描述的方法调查了耳聋情况。使用判别函数法，诊断组通过六个独立变量高度显著地区分开来，这六个变量共同预测了40%的方差。这些变量是：“分裂样人格”因素、存活子女数量、促发事件、耳聋、家族病史和社会阶层。
