Factitious disorders (FDs) are well known to a majority of physicians; however, the corresponding ICD-10 diagnosis F68.1 remains severely under assigned and often misdiagnosed. Based on a previously conducted nationwide survey in Germany, we extended the analyzed variables to further understand FD characteristics.

The assignments regarding the following variables in the German diagnosis-related group statistics were analyzed: residence of the patient and location of the diagnosing institution, primary referral to the diagnosing institution, reason for admission and discharge, specialty department, total length of stay, length of stay in the longest treating department, surgery performed, case mix revenue, regional type of the treating institution, and patients’ region of origin.

A very distinct difference was observed in the assignment rates based on the homeland of the diagnosed patient and diagnosing institution. The assignment rate showed no significant difference across German regions. Based on our findings, a patient with FD in Germany might exhibit the following “typical” traits: A woman in her late thirties from a rural area is referred by a physician or another hospital wherein she was previously treated for more than a day to an institution for fully inpatient hospital treatment wherein she completes her treatment regularly. Dermatology, neurology, emergency, and internal medicine departments tend to be confronted with patients with FDs more often than other departments; however, surgery is performed in every fifth case. Patients are primarily treated in only one department for ~ 25 days. The case mix revenue will most probably not exceed €5000.

大多数医生都知道人为性障碍 (FD)。然而，相应的 ICD-10 诊断 F68.1 仍然严重未分配且经常被误诊。基于之前在德国进行的全国性调查，我们扩展了分析变量以进一步了解 FD 特征。

对德国诊断相关组统计中以下变量的分配进行了分析：患者居住地和诊断机构的位置，主要转诊至诊断机构，入院和出院原因，专科科室，总住院时间，长度停留时间最长的科室、进行的手术、病例组合收入、治疗机构的地区类型和患者的来源地区。

基于被诊断患者和诊断机构的家乡，在分配率方面观察到了非常明显的差异。德国各地区的分配率没有显着差异。根据我们的研究结果，德国的 FD 患者可能表现出以下“典型”特征： 一名来自农村地区的 30 多岁女性被医生或之前接受过一天以上治疗的另一家医院转诊至完全住院治疗的机构，她定期完成治疗。与其他科室相比，皮肤科、神经科、急诊科和内科更容易遇到 FD 患者；但是，每五个病例就进行一次手术。患者主要在一个科室接受约 25 天的治疗。