Pittsburgh Sleep Quality Index

What does ‘PSQI’ stand for?

the Pittsburgh Sleep Quality Index

What are some goals of the PSQI?

• reliable, valid, standardised measure of sleep quality

• discriminate between ‘good’ and ‘poor’ sleepers

• brief, clinically useful assessment of a variety of sleep disturbances affecting sleep quality

What is the structure of the PSQI?

• 19 self-report measures

• 5 partner-rated (not scored)

What 7 components of sleep foes the PSQI cover?

1) subjective sleep quality

2) sleep latency (time takes to fall asleep)

3) duration

4) efficiency

5) disturbances

6) sleep medication use

7) daytime dysfunction

What time frame does the PSQI measure sleep for?

• 1 month

• gives enough info to diagnose sleep-related conditions

• frequency/duration/severity of problems

How do you score the PSQI?

• 19 items grouped into 7 component scores, weighted equally on a 0-3 scale

• 7 components scores summed to yield global PSQI score, ranging from 0-21

• higher scores = worse sleep quality

What are some limitations of the PSQI?

• PSQI does not measure objective sleep

• measures perceived sleep, not physiology

• recall errors (1 months window)

What are some limitations of the PSQI?

• PSQI does not measure objective sleep

• measures perceived sleep, not physiology

• subject to recall errors