• Support Care Cancer · Apr 2020

    Observational Study

    Pain management index (PMI)-does it reflect cancer patients' wish for focus on pain?

    • Morten Thronæs, Trude Rakel Balstad, Cinzia Brunelli, Erik Torbjørn Løhre, Pål Klepstad, Ola Magne Vagnildhaug, Stein Kaasa, Anne Kari Knudsen, and Tora Skeidsvoll Solheim.
    • Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, NTNU - Norwegian University of Science and Technology, Postbox 8905, 7491, Trondheim, Norway. morten.thrones@ntnu.no.
    • Support Care Cancer. 2020 Apr 1; 28 (4): 1675-1684.

    BackgroundThe pain management index (PMI) was developed to combine information about the prescribed analgesics and the self-reported pain intensity in order to assess physicians' response to patients' pain. However, PMI has been used to explore undertreatment of cancer pain. The present study explores prevalence of negative PMI and its associations to clinical variables, including the patient-perceived wish for more attention to pain.MethodsA single-center, cross-sectional, observational study of cancer patients was conducted. Data on demographics and clinical variables, as well as patient-perceived wish for more attention to pain, were registered. PMI was calculated. Negative PMI indicates that the analgesics prescribed might not be appropriate to the pain intensity reported by the patient, and associations to negative PMI were explored by logistic regression models.ResultsOne hundred eighty-seven patients were included, 53% had a negative PMI score. Negative PMI scores were more frequent among patients with breast cancer (OR 4.2, 95% CI 1.3, 13.5), in a follow-up setting (OR 12.1, 95% CI 1.4, 101.4), and were inversely associated to low performance status (OR 0.14, 95% CI 0.03, 0.65). Twenty-two percent of patients with negative PMI scores reported that they wanted more focus on pain management, versus 13% among patients with a non-negative PMI score; the difference was not statistically significant.ConclusionA high prevalence of negative PMI was observed, but only 1/5 of patients with a negative PMI wanted more attention to pain by their physician. Our findings challenge the use of PMI as a measure of undertreatment of cancer pain.

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