Table 1.
Patient characteristics of propensity score matched cohort from three health care systems
| UPHS n = 162,118 | MSMC n = 115,073 | UIHC n = 102,420 | ||||
| Characteristics | Lithium use | Nonlithium use | Lithium use | Nonlithium use | Lithium use | Nonlithium use |
| Matched patients | 425 | 425 | 150 | 150 | 670 | 670 |
| SARS-CoV-2 positive | 33 | 42 | 10 | 22 | 50 | 120 |
| Female (%) | 251 (59) | 251 (59) | 76 (50.7) | 75 (50.7) | 390 | 390 |
| Mean age (SD) | 43 (15) | 43 (17) | 48.9 (19.1) | 48.7 (19.2) | 42.6 (16.4) | 42.6 (16.4) |
| Race white (%) | 306 (72) | 306 (48) | 56 (37.3) | 56 (37.3) | 610 (91) | 610 (91) |
| Race black (%) | 66 (15.5) | 66 (15.5) | 23 (15.3) | 23 (15.3) | 30 (4.4) | 30 (4.4) |
| Race other (%) | 31 (7.2) | 31 (7.2) | 37 (24.7) | 37 (24.7) | 40 (5.9) | 40 (5.9) |
| Race unknown (%) | 22 (5.1) | 22 (5.1) | 34 (22.7) | 34 (22.7) | 0 | 0 |
| Bipolar disorder | 290 | 49 | 66 (44.0) | 3 (2.0) | 380 | 10 |
n is the total number of patients tested for SARS-CoV-2.