Information from the National Library of Medicine
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Ages Eligible for Study: 7 Years to 100 Years (Child, Adult, Senior) Sexes Eligible for Study: All Accepts Healthy Volunteers: No Criteria
We identified 19 eligible studies (3459 individuals), all observational; 13 studies (1917 individuals) were suitable for inclusion in the meta-analysis of mortality . Of these, 12 studied patients infected with 2009 influenza A H1N1 virus (H1N1pdm09). Risk of bias was greatest in the 'comparability domain' of the Newcastle-Ottawa scale, consistent with potential confounding by indication. Data specific to mortality were of very low quality. Reported doses of corticosteroids used were high and indications for their use were not well reported. On meta-analysis , corticosteroid therapy was associated with increased mortality ( odds ratio ( OR ) , 95% confidence interval ( CI ) to ). Pooled subgroup analysis of adjusted estimates of mortality from four studies found a similar association ( OR , 95% CI to ). Three studies reported greater odds of hospital-acquired infection related to corticosteroid therapy ; all were unadjusted estimates and we graded the data as very low quality.