Pain Impact Questionnaire (PIQ-6)
The Pain Impact Questionnaire™ (PIQ-6™) is a six question health survey designed to measure pain severity and the impact of pain on an individual's functional health and well-being.
The PIQ-6 measures the severity of pain and its impact on work and leisure activities, as well as on emotional well-being within a variety of diseases and general populations. This survey is intended for adults 18 years of age and older and is available in U.S. English with a standard four-week recall period.
Pain Impact Questionnaire-Revised (PIQ-R)
In 2009, the PIQ-6™ was revised as part of the Optum 2009 Norming Study. This involved updating the norms, revising the scoring metric (i.e., higher T scores now mean less impact of pain), adding an acute (one-week recall) form and developing updated and more extensive validity, reliability and interpretive information. This new version is referred to as the Pain Impact Questionnaire-Revised™ (PIQ-R™). As no changes were made to the standard form (four-week recall) survey content itself (i.e., all item questions and response choices are identical to those on the original version), users of the PIQ-6™ are able to score their standard form data using the PIQ-R™ scoring metric and norms.
PIQ-6™ vs. PIQ-R™
Here are the main distinguishing features between the PIQ-6™ and the PIQ-R™:
- Responses from a 1998 sample were used to develop the PIQ-6™ norms; norms for the PIQ-R™ are based on a more recent 2009 sample
- The PIQ-6™ has only a standard form; the PIQ-R has both standard and acute forms
- Although both versions of the survey utilize T scores, the meaning of these scores is different. High PIQ-6™ T scores indicate greater pain impact/worse health; consistent with the SF instruments, high PIQ-R™ T scores indicate better health/freedom from pain impact
- The PIQ-R™ provides the user more extensive content- and criterion-based interpretation information than is available for the PIQ-6™