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Table 3 Internal consistency and homogeneity of the Pittsburgh Sleep Quality Index (PSQI) scores in community dwelling Ethiopian adults

From: Validation of the Pittsburgh sleep quality index in community dwelling Ethiopian adults

Components of the PSQI Component-to- global PSQI score correlations Cronbach’s Alpha if Component Deleted
PSQI component of sleep quality .50 .58
PSQI component of sleep latency .56 .52
PSQI component of sleep duration .81 .43
PSQI component of sleep efficiency .81 .45
PSQI component of sleep disturbances .34 .58
PSQI component of sleep medication .18 .60
PSQI component of daytime dysfunction .15 .60