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Proton pump inhibitor-related headaches: a nationwide population-based case-crossover study in Taiwan

Liang JF, Chen YT, Fuh JL, Li SY, Chen TJ, Tang CH, Wang SJ

Cephalalgia : an international journal of headache, 2015

314,210 participants

Abstract

BACKGROUND: Headaches resulting from proton pump inhibitor (PPI) use could cause discontinuation of PPI in as many as 40% of patients who experience such headaches. Previous studies focusing on acute headache risk from PPI use are rare and limited to clinical trials of a single PPI.

OBJECTIVES: To investigate the association between PPI use and headache with a nationwide population-based case-crossover study.

METHODS: Records containing the first diagnosis of any headache, including migraine and tension-type headaches, were retrieved from Taiwan National Health Insurance Database (1998-2010). We compared the rates of PPI use for cases and controls during time windows of 7, 14, and 28 days. The adjusted self-matched odds ratios (ORs) and 95% confidence intervals (CIs) from a conditional logistic regression model were used to determine the association between PPI use and headache.

RESULTS: Overall, 314,210 patients with an initial diagnosis of any headache during the study period were enrolled. The adjusted ORs for headache risk after PPI exposure were calculated for three time periods (within 7 days=1.41, p=0.002, 95% CI 1.14-1.74; within 14 days=1.36, p<0.001, 95% CI 1.16-1.59; within 28 days=1.20, p=0.002, 95% CI 1.07-1.35). Subgroup analyses showed female patients had an increased risk of headache. Among PPIs, lansoprazole and esomeprazole had the highest risks of headache incidence, which were similar to that of nitrates.

CONCLUSION: PPI usage is associated with an…

How strong is the evidence?

Evidence Hub reads this as a case-control, done in people. Its evidence level is 4 of 5 (Low · observational). Observational designs can show an association but not prove cause. Reported size: 314,210 participants or records.

How the five levels of evidence work. The level is assigned automatically from the abstract and can be wrong, so check the paper.

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