Table 3.
Patient demographics and co-morbidities for the matched cohort
| Case (COVID PCR (+)) | Control (COVID PCR (-)) | Chi2 P Valuea | Cramer’s V Valueb | |
|---|---|---|---|---|
| Total, n (%) | ||||
| Total | 28,118 (100.0%) | 70,293 (100.0%) | ||
| Sex, n (%) | 0.091 | 0.005 | ||
| Female | 15,993 (56.9%) | 40,396 (57.5%) | ||
| Male | 12,125 (43.1%) | 29,897 (42.5%) | ||
| Age in years, n (%) | 0.0015 | 0.015 | ||
| 18–29 | 5791 (20.6%) | 14,805 (21.1%) | ||
| 30–39 | 5624 (20.0%) | 14,028 (20.0%) | ||
| 40–49 | 5352 (19.0%) | 12,828 (18.2%) | ||
| 50–64 | 7948 (28.3%) | 19,543 (27.8%) | ||
| 65–74 | 2449 (8.7%) | 6516 (9.3%) | ||
| 75–84 | 775 (2.8%) | 2109 (3.0%) | ||
| 85+ | 179 (0.6%) | 464 (0.7%) | ||
| Race/Ethnicity (self-reported), n (%) | <0.0001 | 0.051 | ||
| Asian | 3018 (10.7%) | 7772 (11.1%) | ||
| Black | 11,402 (40.6%) | 29,680 (42.2%) | ||
| Hispanic | 6877 (24.5%) | 14,057 (20.0%) | ||
| Unknown | 1496 (5.3%) | 3821 (5.4%) | ||
| White | 5325 (18.9%) | 14,963 (21.3%) | ||
| Service area, n (%) | 0.8019 | 0.003 | ||
| Baltimore | 5199 (18.5%) | 13,177 (18.7%) | ||
| DC and Southern Maryland | 13,337 (47.4%) | 33,247 (47.3%) | ||
| Northern Virginia | 9578 (34.1%) | 23,861 (33.9%) | ||
| Unknown | 4 (0.0%) | 8 (0.0%) | ||
| BMI (kg/m2), n (%) | <0.0001 | 0.060 | ||
| <18.5 (Underweight) | 146 (0.5%) | 597 (0.8%) | ||
| 18.5-24.9 (Healthy Weight) | 3750 (13.3%) | 12,179 (17.3%) | ||
| 25-29.9 (Overweight) | 6454 (23.0%) | 16,680 (23.7%) | ||
| 30-39.9 (Obesity) | 7956 (28.3%) | 17,916 (25.5%) | ||
| 40 + (Severe Obesity) | 2325 (8.3%) | 4781 (6.8%) | ||
| No Result | 7487 (26.6%) | 18,140 (25.8%) | ||
| Co-morbidities, n (%) | ||||
| Chronic Kidney Disease | 849 (3.0%) | 2285 (3.3%) | 0.062 | 0.006 |
| COPD | 266 (0.9%) | 935 (1.3%) | <0.0001 | 0.016 |
| Diabetes Mellitus | 5271 (18.7%) | 11,498 (16.4%) | <0.0001 | 0.029 |
| Hepatitis B | 200 (0.7%) | 532 (0.8%) | 0.4525 | 0.002 |
| HIV | 239 (0.8%) | 567 (0.8%) | 0.4953 | 0.002 |
| Pregnancy | 489 (1.7%) | 1486 (2.1%) | 0.0002 | 0.012 |
| Malignancy | 729 (2.6%) | 2598 (3.7%) | <0.0001 | 0.028 |
| Hospitalizationc, n (%) | 0.1919 | 0.0042 | ||
| Hospitalization | 511 (1.8%) | 1366 (1.9%) | ||
| Death Post Indexd, n (%) | 0.0029 | 0.0095 | ||
| Death | 42 (0.1%) | 58 (0.1%) | ||
ap Values compare PCR-positive case patients to PCR-negative control patients for the specified demographic/co-morbidity. Analyses were performed using Pearson’s chi-squared with α = 0.05. bCramer’s V results are based on absolute value. Values < 0.1 represents little to no association with the test groups. cHospitalization represents if a patient was hospitalized in the 30–120 time period post index date. dDeath represents if a patient died 0–120 days post index.