Clinical characteristics and risk factors for mortality of hospitalized patients with COVID-19 in a community hospital: A retrospective cohort study
et al., Mayo Clinic Proceedings: Innovations, Quality & Outcomes (Peer Reviewed)
Retrospective 313 patients, mostly critical stage and mostly requiring respiratory support, showing unadjusted RR 1.06, p = 0.77. Confounding by indication likely.
risk of death, 6.3% higher, RR 1.06, p = 0.77, treatment 22 of 65 (33.8%), control 79 of 248 (31.9%), unadjusted.
Effect extraction follows pre-specified rules prioritizing more serious outcomes.
This study is excluded in the after exclusion results of meta
substantial unadjusted confounding by indication likely, excessive unadjusted differences between groups, unadjusted results with no group details.
Rodriguez-Nava et al., 11/5/2020, retrospective, USA, North America, peer-reviewed, median age 68.0, 8 authors.