Table 3 Characteristics of the hospital stay for cases and controls of the COVID-19 outbreak
Variables | Nosocomial COVID-19 No. (%) | Matched control No. (%) | IRR (95%CI) | P value |
|---|---|---|---|---|
Percent of exposure on single room | ||||
0–50% of time | 36 (92.3%) | 55 (78.6%) | Reference | |
> 50% of time | 3 (7.7%) | 15 (21.43%) | 0.37 (0.15–0.92) | 0.031 |
Percent of exposure on double room | ||||
0–50% of time | 26 (66.7%) | 46 (65.7%) | Reference | |
> 50% of time | 12 (33.3%) | 24 (34.3%) | 0.76 (0.44–1.30) | 0.310 |
Percent of exposure on multi-bedded room | ||||
0–50% of time | 20 (51.2%) | 45 (64.3%) | Reference | |
> 50% of time | 19 (48.7%) | 25 (35.7%) | 1.86 (1.17–2.94) | 0.008 |
Days in single room (two-day intervals) | ||||
≥ 0, ≤ 2 | 35 (89.7%) | 57 (81.4%) | Reference | |
> 2, ≤ 4 | 2 (5.1%) | 9 (12.9%) | 0.44 (0.15–1.31) | 0.140 |
> 4, ≤ 7 | 2 (5.1%) | 4 (5.7%) | 0.82 (0.29–2.31) | 0.709 |
Days in double room (two-day intervals) | ||||
≥ 0, ≤ 2 | 28 (71.8%) | 46 (65.7%) | Reference | |
> 2, ≤ 4 | 1 (2.6%) | 11 (15.7%) | 0.17 (0.02–1.15) | 0.069 |
> 4, ≤ 7 | 10 (25.6%) | 13 (18.6%) | 0.74 (0.41–1.31) | 0.300 |
Days in multi-bedded room (two-day intervals) | ||||
≥ 0, ≤ 2 | 18 (46.2%) | 50 (71.4%) | Reference | |
> 2, ≤ 4 | 5 (12.8%) | 11 (15.7%) | 1.15 (0.58–2.30) | 0.686 |
> 4, ≤ 7 | 16 (41.0%) | 9 (12.9%) | 3.89 (2.28–6.65) | 0.000 |