Table 1.
Characteristics of patients from the three healthcare systems.a
| Number of patients | Total |
Hospital system 1 |
Hospital system 2 |
Hospital system 3 |
|---|---|---|---|---|
| (n = 30,422) | (n = 1952) | (n = 8344) | (n = 20,126) | |
| Mean Age, years (SD) | 62.3 (21.04) | 51.7 (22.0) | 61.2 (19.6) | 63.8 (21.2) |
| Median Age, years (IQR) | – | 56 (36–68) | 63 (48–76) | 68 (54–79) |
| Era of Diagnosis Count (%) | ||||
| 2020Q1 | 372 (1.2) | – | 305 (3.65) | 67 (0.33) |
| 2020Q2 | 2777 (9.1) | 44 (2.3) | 2330 (27.9) | 403 (2.0) |
| 2020Q3 | 1229 (4.0) | 80 (4.1) | 329 (3.94) | 820 (4.1) |
| 2020Q4 | 6605 (21.7) | 206 (10.6) | 1625 (19.5) | 4774 (23.7) |
| 2021Q1 | 4481 (14.7) | 200 (10.2) | 1576 (18.9) | 2705 (13.4) |
| 2021Q2 | 2147 (7.1) | 118 (6.0) | 559 (6.70) | 1470 (7.3) |
| 2021Q3 | 3260 (10.7) | 745 (38.1) | 551 (6.60) | 1964 (9.8) |
| 2021Q4 | 6251 (20.5) | 559 (28.6) | 1011 (12.1) | 4681 (23.3) |
| 2022Q1 | 3300 (10.8) | – | 58 (0.70) | 3242 (161.) |
| Sex Count (%) | ||||
| Men | 15,296 (50.3) | 899 (46.1) | 4279 (51.3) | 10,118 (50.3) |
| Women | 15,124 (49.7) | 1051 (53.8) | 4065 (48.7) | 10,008 (49.7) |
| Comorbidities Count (%) | ||||
| Hypertension | 13,504 (44.4) | 419 (21.5) | 3215 (38.5) | 9870 (49.0) |
| Diabetes | 7410 (24.4) | 260 (13.3) | 1738 (20.8) | 5412 (26.9) |
| Cardiovascular diseases | 8679 (28.5) | 288 (14.8) | 2549 (30.5) | 5842 (29.0) |
| Neurological diseases | 3093 (10.2) | 121 (6.2) | 738 (8.8) | 2234 (11.1) |
| Malignant tumor | 734 (2.4) | 53 (2.7) | 270 (3.2) | 411 (2.0) |
| Chronic pulmonary disease | 6029 (19.8) | 192 (9.8) | 1303 (15.6) | 4534 (22.52) |
| Chronic kidney disease | 4953 (16.2) | 153 (7.8) | 1304 (15.6) | 3496 (17.4) |
| Number of patients with at least one observation after 90 days | 12,424 | 884 | 5269 | 6271 |
| Mean Time of PASC Observation, days (SD) | 312.67 (136.67) | 319.76 (151.43) | 385.79 (172.48) | 234.47 (87.14) |
| Median Time of PASC Observation, days (IQR) | – | 305 (221–385) | 376 (253–514) | 235 (168–281) |
| Minimum and Maximum Time of PASC Observation, days | 90–852 | 90–852 | 90–729 | 90–550 |
a
Data are n (%), n/N (%), or median (IQR). The differing denominators indicate missing data. Within the category sex, the category “other” was designated at some hospitals, but the results were censored due to the number being low.