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Objectives

Despite the demonstrated utility of the Pittsburgh Sleep Quality Index (PSQI) in various demographic groups, it has never been validated in a sample of Indian subjects. To extend and confirm the PSQI’s applicability for South Asian subjects, this preliminary study aimed to assess its psychometric and diagnostic validity in a sample of university students.

Methods

Forty-seven male students were recruited from Jamia Millia Islamia, a public central university in New Delhi, India. The mean age of the students was 23.4±3.9 years, and they had a mean body mass index (BMI) of 23.3±3.3 kg/m 2. The PSQI was administered to all subjects and overnight polysomnographic testing was carried out as a concurrent validation measure.

Results

Cronbach’s alpha for the questionnaire was found to be 0.736. Internal homogeneity was high, with the majority of correlations between questionnaire component scores and the …