From: Post-infection cognitive impairments in a cohort of elderly patients with COVID-19
 | Patients (n = 1539) | Severe cases (n = 238) | Non-severe cases (n = 1301) | Control (n = 466) | P value Patients vs. Control | P value Severe vs. Non-Severe |
---|---|---|---|---|---|---|
Age – Median (IQR), year | 69 (66, 75) | 72(67–80) | 68(66–74) | 67(66–76) | 0.119a | < 0.001a |
Male – No. (%) | 738 (47.95) | 128(53.8) | 607(46.7) | 226(48.5) | 0.761b | 0.041b |
Education – Median (IQR), year | 12 (9–12) | 12(6–12) | 12(9–12) | 12(6–12) | 0.758a | 0.003 a |
BMI – Median (IQR), kg/m2 | 24.0(22.5–25.4) | 24.4(22.9–25.7) | 23.9(22.4–25.3) | 24.2(22.5–25.6) | 0.407a | 0.002a |
Coexisting disorders – No. (%) | ||||||
 Hypertension | 589 (38.27) | 112(47.1) | 477(36.7) | 164(35.2) | 0.229b | 0.002b |
 Diabetes mellitus | 304 (19.75) | 52(21.8) | 252(19.4) | 87(18.7) | 0.605b | 0.377b |
 Hyperlipidemia | 155 (10.07) | 27(11.3) | 128(9.8) | 42(9.0) | 0.501b | 0.478b |
 Stroke history | 87 (5.65) | 40(16.8) | 47(3.6) | 36(7.7) | 0.102b | < 0.001b |
 Coronary heart disease history | 212 (13.78) | 66(27.7) | 146(11.2) | 67(14.4) | 0.704b | < 0.001b |
 COPD | 150 (9.75) | 42(17.6) | 108(8.3) | 42(9.0) | 0.637b | < 0.001b |
ICU admission – No. (%) | 81 (5.26) | 56(23.5) | 24(1.8) |  |  | < 0.001b |
Mechanical Ventilation, No. (%) | 96 (6.24) | 62(26.1) | 33(2.5) |  |  | < 0.001b |
High flow oxygen therapy, No. (%) | 326 (21.18) | 93(39.1) | 232(17.8) |  |  | < 0.001b |
Delirium, No. (%) | 105 (6.82) | 61(25.6) | 43(3.3) |  |  | < 0.001b |