Gastrointestinal symptoms in NSAID users in an 'average risk population': results of a large population-based study in randomly selected Dutch inhabitants

AimNon-steroidal anti-inflammatory drug (NSAID) use is widespread and associated with gastrointestinal symptoms and complications. The aims of this study were to assess (i) gastrointestinal symptoms in users of prescribed and over-the-counter (OTC) NSAIDs and (ii) proton pump inhibitor (PPI) co-prescription rates in NSAID users at increased risk for gastrointestinal complications. MethodsSurveys were sent to a randomly selected sample of the adult Dutch general population in December 2008. Questions included demographics, gastrointestinal symptoms, medication use and comorbidity. Main outcome measure was presence of gastrointestinal symptoms. ResultsA total of 18,317 surveys were returned (response rate 35%), of which 16,758 surveys were eligible for analysis. Of these, 3233 participants (19%) reported NSAID use. NSAID users more frequently reported gastrointestinal symptoms than persons not using NSAIDs (33% vs. 24%, p<0.01). Respondents who specified on prescription NSAID use (n=683) were older, reported more comorbidity, and experienced more gastrointestinal symptoms (41%) compared with OTC users (n=894, 33%, p<0.01). This difference was not statistically significant after adjustment for confounders (0.99, 95% CI 0.71-1.37). In respondents with an increased gastrointestinal risk profile, PPI co-prescription rates were 51% for on prescription users and 25% for OTC users. ConclusionsPrevalence of gastrointestinal symptoms was high in both prescribed and OTC NSAID users, emphasising the side effects of both types of NSAIDs. PPI co-prescription rates in NSAID users at risk for gastrointestinal complication were low.