Effect of chronic hydroxychloroquine use on COVID-19 risk in patients with rheumatoid arthritis and systemic lupus erythematosus: a multicenter retrospective cohort
et al., Journal of International Medical Research,
Retrospective RA/SLE patients in Saudi Arabia. Numbers in this paper are contradictory. Figure 1 and the introduction to the results indicate 304 HCQ users, while Table 1 and later in the results shows 207 (arms switched). The subsequent text reporting the ICU results (2 non-HCQ-users, zero HCQ users) suggests that the labels are switched in Figure 2, or possibly just specific results.
This study is excluded in meta
unresolved data inconsistency.
Walbi et al., 4/6/2022, retrospective, Saudi Arabia, Middle East, peer-reviewed, 16 authors, study period March 2020 - February 2021.