Patient Global Impression of Severity (PGI-S)
The Patient Global Impression of Severity (PGI-S) is a global index that may be used to rate the severity of a specific condition (a single-state scale). It is a simple, direct, easy to use scale that is intuitively understandable to clinicians.
The PGI-S was validated on women with stress urinary incontinence. It has not been established to be applicable to men and women with other lower urinary tract symptoms or conditions.
Method of Use
The PGI-S is a single question asking the patient to rate how their urinary tract condition is now on a scale of 1. Normal to 4. Severe.
The PGI-S has excellent construct validity. The assessment variables included incontinence episode frequency, the Incontinence Quality of Life Questionnaire results, and fixed volume (400 mL) stress pad test results. The category differences for all variables was highly significant (P< .0001).
Global ratings can precise when used to assess the same person over time but they have a degress of imprecision across the spectrum of different people who might use it.
Recent Related Research (from Pubmed)
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- Yalcin I, Bump R. Validation of two global impression questionnaires for incontinence. Am J Obstet Gynecol 2003;189:98-101.