The PSQI can be used for both an initial assessment and ongoing comparative measurements with older adults
across the health care continuum.
VALIDITY AND RELIABILITY: The PSQI has internal consistency and a reliability coefficient (Cronbach’s alpha) of 0.83 for its seven components.
Numerous studies using the PSQI in a variety of older adult populations internationally have supported high validity and reliability.
STRENGTHS AND LIMITATIONS: The PSQI is a subjective measure of sleep. Self reporting by clients though empowering, may can reflect
inaccurate information if the client has difficulty understanding what is written, or cannot see or physically write out responses. The scale has
been translated into over 56 languages. For those with visual impairments, the nurse can read the PSQI as written to the client.