Patient and provider characteristics for patients with acute ischemic stroke (AIS) in the covid-19 (March 2020-February 2021) versus precovid-19 study period (March 2019-February 2020)
| Characteristics | Precovid-19 era (March 2019-February 2020) (n=125 116) | Covid-19 era (March 2020-February 2021) (n=105 081) | P value |
| Age, years: | |||
| Mean, SD | 70.42 (13.10) | 70.14 (13.12) | 0.6144 |
| 18-49 | 8489 (6.78) | 7551 (7.19) | <0.0001 |
| 50-59 | 16 536 (13.22) | 13 754 (13.09) | |
| 60-69 | 30 013 (23.99) | 25 614 (24.38) | |
| ≥70 | 70 078 (56.01) | 58 162 (55.35) | |
| Sex: | |||
| Male | 64 603 (51.63) | 54 558 (51.92) | 0.1720 |
| Female | 60 513 (48.37) | 50 523 (48.08) | |
| Race: | |||
| White | 95 247 (76.13) | 80 425 (76.54) | <0.0001 |
| Black | 18 726 (14.97) | 16 181 (15.40) | |
| Asian | 2485 (1.99) | 2000 (1.90) | |
| Other | 8658 (6.92) | 6475 (6.16) | |
| Marital status: | |||
| Married | 53 666 (42.89) | 44 538 (42.38) | 0.0130 |
| Single | 60 492 (48.35) | 51 455 (48.97) | |
| Other | 10 958 (8.76) | 9088 (8.65) | |
| Payor: | |||
| Commercial | 19 711 (15.75) | 16 891 (16.07) | <0.0001 |
| Medicaid | 10 432 (8.34) | 9312 (8.86) | |
| Medicare | 87 343 (69.81) | 72 038 (68.55) | |
| Other | 7630 (6.10) | 6840 (6.51) | |
| Elixhauser Score: | |||
| 0 | 2146 (1.72) | 1479 (1.41) | <0.0001 |
| 1 | 8896 (7.11) | 6667 (6.34) | |
| ≥2 | 114 074 (91.17) | 96 935 (92.25) | |
| Congestive heart failure | 24 176 (19.32) | 20 605 (19.61) | 0.0840 |
| Hypertension | 108 123 (86.42) | 91 404 (86.98) | 0.0001 |
| Diabetes | 49 057 (39.21) | 41 473 (39.47) | 0.2060 |
| Obesity | 20 035 (16.01) | 18 603 (17.70) | 0.0001 |
| Atrial fibrillation | 29 959 (23.94) | 25 507 (24.27) | 0.0660 |
| Transient ischemic attack | 2004 (1.60) | 1907 (1.81) | 0.0001 |
| Coronary artery disease | 38 762 (30.98) | 32 010 (30.46) | 0.0070 |
| Dyslipidemia | 82 673 (66.08) | 70 545 (67.13) | 0.0001 |
| Smoking | 26 133 (20.89) | 22 097 (21.03) | 0.4060 |
| No of beds: | |||
| 0-299 | 39 522 (31.59) | 33 893 (32.25) | 0.0010 |
| 300-500 | 38 696 (30.93) | 31 876 (30.33) | |
| >500 | 46 898 (37.48) | 39 312 (37.41) | |
| Region: | |||
| Midwest | 29 372 (23.48) | 25 507 (24.27) | <0.0001 |
| Northeast | 16 467 (13.16) | 13 167 (12.53) | |
| South | 62 014 (49.57) | 51 937 (49.43) | |
| West | 17 263 (13.80) | 14 470 (13.77) | |
| Urban-rural status: | |||
| Rural | 15 180 (12.13) | 12 526 (11.92) | 0.1190 |
| Urban | 109 936 (87.87) | 92 555 (88.08) | |
| Teaching | 64 723 (51.73) | 54 236 (51.61) | 0.5760 |
Data are numerator (percentage). IQR=interquartile range; SD=standard deviation.