Nonspecific measures

Patient Global Impression of Change (PGIC) / Global Rating of Change (GRC)

Link

Type

  • Evaluative

Description

  • Reviews the patient’s impression of progress they’ve made with treatment. See review.

Advantages

  • Simple to understand.
  • No scoring required.
  • A horizontal 7 point scale has good clinimetric properties.

Precautions or limitations

  • The wording that introduces the scale needs to be carefully considered to get an unambiguous response. Possible wording: very much better, better, slightly better, the same, slightly worse, worse, very much worse. For the midpoint, wording could be "unchanged" with end points spelt out in words and numbers or marks.
  • The scale should be used along with at least one standardised outcome measure.

Patient Specific Functional Scale (PSFS)

Link

Type

  • Evaluative

Description

  • Measures change in functional activities specifically relevant to individual clients.

Advantages

  • Useful for clients with very specific functional needs or goals.
  • Keeps treatment goal oriented.
  • Works well when it’s difficult to measure progress using standardised outcome measures (e.g. English language literacy issues) or the client has a condition that doesn't fit well with available outcome measures.
  • Can supplement standardised outcome measures and add an individualised aspect that can more fully engage clients with their own progress.

Precautions or limitations

  • If the functional activities chosen vary widely with respect to how likely/quickly they are to be achieved, the scoring will be affected.
  • Should be used along with other standardised outcome measures.

Work Productivity and Activity Impairment Questionnaire (WPAI)

Link

Type

  • Evaluative

Description

  • Measures work hours, absenteeism and presenteeism over the previous week.
  • A key measure in ePPOC.

Advantages

  • Measures aspects of work in a more nuanced way than just recording hours at work. Even if work hours don't/can't change, the WPAI can measure changes in absenteeism and presenteeism.
  • Simple to use (6 items). Scoring is moderately easy but requires a calculator. If the person is not working, it is easy to score.
  • Can be adapted to a specific condition.
  • Many translated versions available.

Precautions or limitations

  • None of note.


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