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. Author manuscript; available in PMC: 2021 Mar 1.
Published in final edited form as: Arthritis Rheumatol. 2020 Jan 7;72(3):448–453. doi: 10.1002/art.41121

Table 4 –

Comparison of African-American and Caucasian Hydroxychloroquine Blood Levels and Rate of Hydroxychloroquine Retinopathy

African-American
N (%)		 Caucasian
N (%)		 p-value
HCQ blood level mean tertiles 0.1815
 0–741 82 (39.2%) 71 (30.9%)
 741.5–1176.5 63 (30.2%) 77 (33.5%)
 1177+ 64 (30.6%) 82 (35.6%)
HCQ blood level maximum tertiles 0.3621
 0–1182 74 (35.4%) 73 (31.7%)
 1183–1752 66 (31.6%) 66 (28.7%)
 1753+ 69 (33.0%) 91 (39.6%)
HCQ retinopathy 0.3084
 Yes 8 (3.6%) 14 (5.6%)
 No 215 (96.4%) 238 (94.4%)