Patient characteristics after propensity score matching
| After infection in the matched primary cohort and influenza control cohort | After infection in the matched primary cohort and RTI control cohort | |||||||||||
| 3-Month follow-up | 6-Month follow-up | 3-Month follow-up | 6-Month follow-up | |||||||||
| Hospitalised with COVID-19 | Hospitalised with influenza | Standardised differences | Hospitalised with COVID-19 | Hospitalised with influenza | Standardised differences | Hospitalised with COVID-19 | Hospitalised with other RTI | Standardised differences | Hospitalised with COVID-19 | Hospitalised with other RTI | Standardised differences | |
| No. of patients | 457 | 457 | 285 | 285 | 597 | 597 | 333 | 333 | ||||
| Sex | ||||||||||||
| Female | 263 (57.5) | 246 (53.8) | 0.075 | 162 (56.8) | 158 (55.4) | 0.028 | 325 (54.4) | 330 (55.3) | −0.017 | 183 (55.0) | 182 (54.7) | 0.006 |
| Age | ||||||||||||
| Mean (SD), years | 78.9 (11.5) | 77.5 (14.1) | 0.107 | 78.5 (11.7) | 78.1 (12.6) | 0.028 | 74.7 (14.7) | 74.9 (16.1) | −0.016 | 74.4 (15.9) | 73.7 (17.2) | 0.040 |
| Comorbidities | ||||||||||||
| Hypertension | 300 (65.6) | 294 (64.3) | 0.027 | 192 (67.4) | 183 (64.2) | 0.066 | 370 (62.0) | 392 (65.7) | −0.077 | 215 (64.6) | 206 (61.9) | 0.056 |
| Diabetes | 216 (47.3) | 228 (49.9) | −0.052 | 147 (51.6) | 148 (51.9) | −0.007 | 305 (51.1) | 297 (49.7) | 0.027 | 169 (50.8) | 163 (48.9) | 0.036 |
| Chronic lower respiratory disease | 99 (21.7) | 97 (21.2) | 0.011 | 59 (20.7) | 53 (18.6) | 0.053 | 111 (18.6) | 109 (18.3) | 0.009 | 65 (19.5) | 66 (19.8) | −0.008 |
| Heart disease | 222 (48.6) | 209 (45.7) | 0.057 | 138 (48.4) | 133 (46.7) | 0.035 | 227 (38.0) | 229 (38.4) | −0.007 | 140 (42.0) | 129 (38.7) | 0.067 |
| Chronic kidney disease | 39 (8.5) | 39 (8.5) | −0.000 | 26 (9.1) | 28 (9.8) | −0.024 | 40 (6.7) | 38 (6.4) | 0.014 | 27 (8.1) | 27 (8.1) | −0.000 |
| Chronic liver disease | 59 (12.9) | 51 (11.2) | 0.054 | 36 (12.6) | 33 (11.6) | 0.032 | 76 (12.7) | 56 (9.4) | 0.107 | 47 (14.1) | 39 (11.7) | 0.072 |
| Stroke | 52 (11.4) | 59 (12.9) | −0.047 | 37 (13.0) | 39 (13.7) | −0.021 | 53 (8.9) | 47 (7.9) | 0.036 | 37 (11.1) | 38 (11.4) | −0.009 |
| Dementia | 82 (17.9) | 75 (16.4) | 0.041 | 52 (18.2) | 54 (18.9) | −0.018 | 89 (14.9) | 99 (16.6) | −0.046 | 55 (16.5) | 59 (17.7) | −0.032 |
| Cancer | 111 (24.3) | 111 (24.3) | −0.000 | 57 (20.0) | 54 (18.9) | 0.027 | 113 (18.9) | 109 (18.3) | 0.017 | 58 (17.4) | 62 (18.6) | −0.031 |
| Rheumatoid arthritis | 17 (3.7) | 19 (4.2) | −0.022 | 9 (3.2) | 10 (3.5) | −0.020 | 18 (3.0) | 10 (1.7) | 0.089 | 10 (3.0) | 9 (2.7) | 0.018 |
Values are presented as number (%) unless otherwise indicated.
COVID-19, coronavirus disease 2019; RTI, respiratory tract infection.