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Drug Saf. 2007;30(8):669-75.

Physician response to patient reports of adverse drug effects: implications for patient-targeted adverse effect surveillance.

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1
Department of Medicine, University of California San Diego, La Jolla, CA 92093-0995, USA. bgolomb@ucsd.edu

Abstract

OBJECTIVE:

Using a patient targeted survey, we sought to assess patient representations of how physicians responded when patients presented with possible adverse drug reactions (ADRs). As a demonstration case, we took one widely prescribed drug class, the HMG-CoA reductase inhibitors ('statins'). This information was used to assess whether a patient-targeted ADR surveillance approach may complement provider reporting, potentially fostering identification of additional patients with possible or probable ADRs.

METHODS:

A total of 650 adult patients taking statins with self-reported ADRs completed a survey. Depending on the problems reported, some patients completed additional surveys specific to the most commonly cited statin ADRs: muscle, cognitive or neuropathy related. Patients were asked to report drug, dose, ADR character, time course of onset with drug, recovery with discontinuation, recurrence with rechallenge, quality-of-life impact, and interactions with their physician in relation to the perceived ADR. This paper focuses on patients' representation of the doctor-patient interaction and physicians' attribution, when patients report perceived ADRs.

RESULTS:

Eighty-seven percent of patients reportedly spoke to their physician about the possible connection between statin use and their symptom. Patients reported that they and not the doctor most commonly initiated the discussion regarding the possible connection of drug to symptom (98% vs 2% cognition survey, 96% vs 4% neuropathy survey, 86% vs 14% muscle survey; p < 10(-8) for each). Physicians were reportedly more likely to deny than affirm the possibility of a connection. Rejection of a possible connection was reported to occur even for symptoms with strong literature support for a drug connection, and even in patients for whom the symptom met presumptive literature-based criteria for probable or definite drug-adverse effect causality. Assuming that physicians would not likely report ADRs in these instances, these patient-submitted ADR reports suggest that targeting patients may boost the yield of ADR reporting systems.

CONCLUSIONS:

Since low reporting rates are considered to contribute to delays in identification of ADRs, findings from this study suggest that additional putative cases may be identified by targeting patients as reporters, potentially speeding recognition of ADRs.

PMID:
17696579
[Indexed for MEDLINE]
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