ArticleBMC medicine2025
Heterogeneous treatment effects of stress ulcer prophylaxis among ICU patients at risk for gastrointestinal bleeding.
Article in BMC medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundWhile randomized clinical trials of stress ulcer prophylaxis (SUP) have generally shown no overall benefit, subgroup analyses suggest the benefit or harm of SUP in specific patients, indicating heterogeneity of treatment effects (HTE). Understanding HTE is crucial for tailoring SUP to individual treatment.
methodsThis cohort study included patients admitted to intensive care unit (ICU) with at least one risk factor for clinically important gastrointestinal bleeding (GIB). The primary exposure was the use of SUP within 48 h after ICU entry; the primary outcome was 28-day mortality. We employed conventional subgroup analysis, risk-based analysis, and effect-based analysis to explore the HTE of SUP.
resultsA total of 25,475 patients were included, of whom 6199 (24.3%) received SUP, with famotidine being the most commonly prescribed (53.7%). Baseline characteristics were well-balanced between treatment groups after weighting. SUP was not associated with the 28-day mortality in the overall population (median value for the posterior distribution of the odds ratio (OR), 1.03; 95% credible interval (CrI), 0.96-1.11). In conventional subgroups, the impact of SUP on 28-day mortality varied substantially between patients with an age of higher than or equal to 77 years in comparison with other age subgroups (posterior probability of difference in OR, 99.3%), between patients with and without chronic liver disease (posterior probability of difference in OR, 99.9%), between patients with and without coagulopathy (posterior probability of difference in OR, 92.1%), and between patients with and without malignant cancer (posterior probability of difference in OR, 100%). In risk-based analysis, patients at high risk of death exhibited the highest propensity for benefit from SUP (posterior probability of an OR > 1, 1.9%). In effect-based analysis, patients with malignant cancer and a higher Charlson comorbidity index identified at high probability of benefit.
conclusionsAmong ICU patients with at least one risk factor for clinically important GIB, those who are younger, have chronic liver disease, coagulopathy, or malignant cancer are more likely to benefit from SUP.
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