Morey L C
Br J Psychiatry. 1985 Apr;146:424-8. doi: 10.1192/bjp.146.4.424.
This study investigated the validity of the Fould & Bedford hierarchical model of psychiatric illness, as compared to hierarchical models based upon prevalence and severity of disorder. The DSSI was administered to 52 American psychiatric in-patients with severe disturbances. The reports of symptoms in this sample conformed to the Foulds hierarchy in 90% of cases, while 94% of cases conformed to a model based upon prevalence. When a cross-method validation was investigated, the Foulds & Bedford classification demonstrated good discriminative capacity, while models based upon prevalence and severity failed to achieve significance. These results suggest that the Foulds & Bedford model is a useful taxonomy of symptomatology in psychiatric illness.
本研究调查了福尔德斯和贝德福德的精神疾病分层模型的有效性，并将其与基于疾病患病率和严重程度的分层模型进行了比较。对52名患有严重精神障碍的美国精神病住院患者进行了抑郁症状自评量表（DSSI）测试。该样本中90%的病例症状报告符合福尔德斯分层，而94%的病例符合基于患病率的模型。在进行交叉方法验证时，福尔德斯和贝德福德分类显示出良好的区分能力，而基于患病率和严重程度的模型则未达到显著水平。这些结果表明，福尔德斯和贝德福德模型是精神疾病症状学的一种有用分类法。
