Survey of 428 recovered COVID-19 patients in Iraq, showing fewer hospital visits for patients on prophylactic vitamin C or D. Hospitalization was lower for those on vitamin C, D, or zinc, without statistical significance.
risk of hospitalization, 40.9% lower, RR 0.59, p = 0.30, treatment 6 of 127 (4.7%), control 24 of 300 (8.0%), NNT 31, unadjusted.
Effect extraction follows pre-specified rules prioritizing more serious outcomes.
This study is excluded in the after exclusion results of meta
unadjusted results with no group details.
Abdulateef et al., 4/8/2021, retrospective, Iraq, Middle East, peer-reviewed, 7 authors, study period July 2020 - August 2020, dosage varies.