[Traditional Chinese medicine constitution types in 127 elderly patients with insomnia: an investigation in communities of Yangpu District, Shanghai].

Objective: To analyze the distribution of traditional Chinese medicine constitution types in elderly patients with insomnia.

Methods: The epidemiological data were collected from communities in the Yangpu District, Shanghai via a cross-sectional field survey. The elderly participants were enrolled by using the Pittsburgh Sleep Quality Index (PSQI) scale and the TCM Constitution Questionnaire.