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- Title
Heterogeneity of treatment effect of stress ulcer prophylaxis in ICU patients: A secondary analysis protocol.
- Authors
Granholm, Anders; Marker, Søren; Krag, Mette; Zampieri, Fernando G.; Thorsen‐Meyer, Hans‐Christian; Kaas‐Hansen, Benjamin S.; Horst, Iwan C. C.; Lange, Theis; Wetterslev, Jørn; Perner, Anders; Møller, Morten H.; Thorsen-Meyer, Hans-Christian; Kaas-Hansen, Benjamin S; van der Horst, Iwan C C
- Abstract
<bold>Background: </bold>In the Stress Ulcer Prophylaxis in the Intensive Care Unit (SUP-ICU) trial, 3291 adult ICU patients at risk for gastrointestinal (GI) bleeding were randomly allocated to intravenous pantoprazole 40 mg or placebo once daily in the ICU. No difference was observed between the groups in the primary outcome 90-day mortality or the secondary outcomes, except for clinically important gastrointestinal bleeding. However, heterogeneity of treatment effect (HTE) not detected by conventional subgroup analyses could be present.<bold>Methods: </bold>This is a protocol and statistical analysis plan for a secondary, post hoc, exploratory analysis of the SUP-ICU trial. We will explore HTE in one set of subgroups based on severity of illness (using the Simplified Acute Physiology Score [SAPS] II) and another set of subgroups based on the total number of risk factors for GI bleeding in each patient using Bayesian hierarchical models. We will summarise posterior probability distributions using medians and 95% credible intervals and present probabilities for different levels of benefit and harm of the intervention in each subgroup. Finally, we will assess if the treatment effect interacts with SAPS II and the number of risk factors separately on the continuous scale using marginal effects plots.<bold>Conclusions: </bold>The outlined post hoc analysis will explore whether HTE was present in the SUP-ICU trial and may help answer some of the remaining questions regarding the balance between benefits and harms of pantoprazole in ICU patients at risk of GI bleeding. CLINICALTRIALS.<bold>Gov Registration: </bold>NCT02467621.
- Subjects
SECONDARY analysis; INTENSIVE care units; PREVENTIVE medicine; ULCERS; ULCER prevention; PEPTIC ulcer prevention; RESEARCH; GASTROINTESTINAL hemorrhage; RESEARCH methodology; EVALUATION research; MEDICAL cooperation; CATASTROPHIC illness; HOSPITAL mortality; TREATMENT effectiveness; COMPARATIVE studies; CRITICAL care medicine; RESEARCH funding; PROBABILITY theory; DISEASE complications
- Publication
Acta Anaesthesiologica Scandinavica, 2019, Vol 63, Issue 9, p1251
- ISSN
0001-5172
- Publication type
journal article
- DOI
10.1111/aas.13432