Fossati A, Maffei C, Battaglia M, Bagnato M, Donati D, Donini M, Fiorilli M, Novella L
Institute of Psychology, University of Urbino, Italy.
Schizophr Bull. 2001;27(1):59-71. doi: 10.1093/oxfordjournals.schbul.a006860.
The aim of the study was to evaluate the latent structure of DSM-IV schizotypal personality disorder (SPD) diagnostic criteria. The sample consisted of 564 consecutively admitted inpatients and outpatients. Exploratory latent class analysis identified a four-class model as the best fitting model for DSM-IV SPD criteria. The first of the SPD latent classes was mainly characterized by odd thinking, inappropriate affect, and interpersonal features; the second class by cognitive/perceptual difficulties; the third class by paranoid features; and the fourth class by absence of SPD features. The conditional probability pattern of the fourclass solution could be safely replicated across confounder strata. Unlike previous findings, oddness, aloofness, and social withdrawal, rather than positive symptoms, best characterized SPD even in clinical samples.
该研究的目的是评估《精神疾病诊断与统计手册》第四版（DSM-IV）分裂型人格障碍（SPD）诊断标准的潜在结构。样本包括564名连续收治的住院患者和门诊患者。探索性潜在类别分析确定了一个四类模型作为DSM-IV SPD标准的最佳拟合模型。SPD潜在类别的第一类主要特征是怪异思维、不适当情感和人际特征；第二类是认知/感知困难；第三类是偏执特征；第四类是不存在SPD特征。四类解决方案的条件概率模式可以在不同混杂因素层次中安全地重复。与之前的研究结果不同，即使在临床样本中，怪异、冷漠和社交退缩而非阳性症状，才是SPD的最佳特征。
