Table 1 Hemodialysis patient characteristics overall and after case-control matching by COVID-19 status during study period
Full Patient Population | Matched Case and Control Patients | |||||
|---|---|---|---|---|---|---|
All Patients | COVID Negative | COVID Positive | p-valuea,b | COVID Negative Controls | COVID Positive Cases | |
Total Patients | 170,234 | 165,452 | 4,782 | 2,379 | 2,379 | |
Mean Age at study start (yr, sd)a | 63.5 (14.2) | 63.5 (14.2) | 64.3 (13.8) | 0.0002 | 63.7 (12.9) | 64.2 (13.8) |
Mean Time on Dialysis at study start (yr, sd)a | 4.2 (4.1) | 4.2 (4.1) | 4.3 (4.0) | 0.0569 | 4.2 (4.1) | 4.4 (4.1) |
Sexb | ||||||
Male (%) | 97,688 (57) | 94,991 (57) | 2,697 (56) | 0.1633 | 1,334 (56) | 1,345 (57) |
Female (%) | 72,546 (43) | 70,461 (43) | 2,085 (44) | 0.1633 | 1,045 (44) | 1,034 (43) |
Raceb | ||||||
White (%) | 72,578 (43) | 70,736 (43) | 1,842 (39) | < 0.0001 | 888 (37) | 888 (37) |
Black (%) | 46,060 (27) | 44,455 (27) | 1,605 (34) | < 0.0001 | 848 (36) | 833 (35) |
Other (%) | 6,720 (4) | 6,579 (4) | 141 (3) | 0.0003 | 75 (3) | 70 (3) |
Unknown (%) | 44,876 (26) | 43,682 (26) | 1,194 (25) | 0.0266 | 568 (24) | 588 (25) |
BMI (kg/m2, sd)a | 29.9 (7.7) | 29.9 (7.7) | 29.9 (7.9) | 0.7699 | 29.1 (7.1) | 29.8 (7.9) |
CVC used during study (%)b | 30,077 (18) | 29,112 (17) | 965 (20) | < 0.0001 | 395 (17) | 450 (19) |
Diabetes (%)b | 70,745 (42) | 68,525 (41) | 2,220 (46) | < 0.0001 | 964 (41) | 1,119 (47) |
COPD Diagnosis (%)b | 16,331 (10) | 15,874 (10) | 457 (10) | 0.9305 | 202 (8) | 211 (9) |
Mean Number of Treatments Per Patient during study period (sd)a | 48 (13) | 48 (13) | 42 (12) | < 0.0001 | 49 (8) | 43 (11) |
Five Year Median HH Income (sd)a | $58,702 (16,596) | $58,530 (16,519) | $64,627 (18,102) | < 0.0001 | $65,563 (18,159) | $65,534 (18,416) |
Five Year Gini Coefficient (sd)a | 0.47 (0.03) | 0.47 (0.03) | 0.48 (0.04) | < 0.0001 | 0.48 (0.04) | 0.48 (0.04) |