Table 2.
The attack rate of coronavirus disease 2019 (COVID-19) according to hydroxychloroquine (HCQ) use
| Variable | Patients | Events | Unadjusted OR |
Adjusted ORa |
||
|---|---|---|---|---|---|---|
| OR (95%CI) | p | OR (95%CI) | p | |||
| All | 2066 | 46 | ||||
| HCQ non-user | 1417 | 31 | (ref) | (ref) | ||
| HCQ userb | 649 | 15 | 1.058 (0.567, 1.973) | 0.8598 | 1.131 (0.570, 2.244) | 0.7248 |
| RA | 1877 | 46 | ||||
| HCQ non-user | 1329 | 31 | (ref) | (ref) | ||
| HCQ userb | 548 | 15 | 1.178 (0.631, 2.201) | 0.6065 | 1.252 (0.629, 2.493) | 0.5229 |
Events = number of COVID-19 diagnoses.
OR, odds ratio; RA, rheumatoid arthritis.
a
Adjusted for age, sex, region, a month of test, hypertension, congestive heart failure, pulmonary disease, peptic ulcer disease, the use of biological disease-modifying anti-rheumatic drug, the number of times healthcare used, and RA- or SLE-related hospitalization within 1 year.
b
Hydroxychloroquine use within 14 days.