Population-Based Quality Indicators for End-of-Life Cancer Care: A Systematic Review

Improving the quality of cancer care is an international priority. Population-based quality indicators (QIs) are key to this process yet remain almost exclusively used for evaluating care during the early, often curative, stages of disease.

To identify all existing QIs for the care of patients with cancer who have advanced disease and/or are at the end of life and to evaluate each indicator's measurement properties and appropriateness for use.

For this systematic review, 5 electronic databases (MEDLINE, Embase, CINAHL, PsycINFO, and the Cochrane Library) were searched from inception through February 4, 2019, for studies describing the development, review, and/or testing of QIs for the care of patients with cancer who have advanced disease and/or are at the end of life. For each QI identified, descriptive information was extracted and 6 measurement properties (acceptability, evidence base, definition, feasibility, reliability, and validity) were assessed using previously established criteria, with 4 possible ratings: positive, intermediate, negative, and unknown. Ratings were collated and each QI classified as appropriate for use, inappropriate for use, or of limited testing. Among the QIs determined as appropriate for use, a recommended shortlist was generated by excluding those that were specific to patient subgroups and/or care settings; related QIs were identified, and the indicator with the highest rating was retained.

The search yielded 7231 references, 35 of which (from 28 individual studies) met the eligibility criteria. Of 288 QIs extracted (260 unique), 103 (35.8%) evaluated physical aspects of care and 109 (37.8%) evaluated processes of care. Quality indicators relevant to psychosocial (18 [6.3%]) or spiritual and cultural (3 [1.0%]) care domains were limited. Eighty QIs (27.8%) were determined to be appropriate for use, 116 (40.3%) inappropriate for use, and 92 (31.9%) of limited testing. The measurement properties with the fewest positive assessments were acceptability (38 [13.2%]) and validity (63 [21.9%]). Benchmarking data were reported for only 16 QIs (5.6%). The final 15 recommended QIs came from 6 studies.

The findings suggest that only a small proportion of QIs developed for the care of patients with cancer who have advanced disease and/or are at the end of life have received adequate testing and/or are appropriate for use. Further testing may be needed, as is research to establish benchmarking data and to expand QIs relevant to psychosocial, cultural, and spiritual care domains.