Table 2: Baseline characteristics, blood profile and chest radiograph findings in patients with first swab positive versus negative.
| First swab positive (n 152) | First swab negative (n 21) | p value | Odds ratio (95% CI) | |
| Sex | 0.364 | 0.631 (0.232 - 1.716) | ||
| Male | 93 (61.2%) | 15 (71.4%) | ||
| Female | 59 (38.8%) | 6 (28.6%) | ||
| Age | 0.018 | 0.274 (0.096 - 0.786) | ||
| ≤ 70 years | 71 (46.7%) | 16 (76.2%) | ||
| ≥ 71 years | 81 (53.3%) | 5 (23.8%) | ||
| ACCI | ||||
| 0-2 | 38 (25.0%) | 11 (52.4%) | 0.009 | 0.303 (0.119 - 0.769) |
| 3-5 | 72 (47.4%) | 6 (28.6%) | 0.105 | 2.250 (0.829 - 6.109) |
| ≥ 6 | 42 (27.6%) | 4 (19.0%) | 0.599 | 1.623 (0.516 - 5.103) |
| SIMD (decile) | ||||
| 1-3 | 64 (42.1%) | 9 (42.9%) | 0.948 | 0.970 (0.386 - 2.439) |
| 4-6 | 48 (31.6%) | 9 (42.9%) | 0.303 | 0.615 (0.243 - 1.559) |
| ≥ 7 | 39 (25.7%) | 3 (14.3%) | 0.415 | 2.071 (0.578 - 7.413) |
| Address not recognized | 1 (0.7%) | 0 (0.0%) | > 0.999 | Inf (Nan - Inf) |
| Lymphopenia (× 10*g/L) | 87 (57.2%) | 14 (66.7%) | 0.411 | 0.669 (0.256 - 1.752) |
| Neutrophils (× 10*g/L) | ||||
| Decreased (< 2.0) | 5 (3.3%) | 1 (4.8%) | 0.546 | 0.680 (0.076 - 6.123) |
| Normal (2.0-7.5) | 99 (65.1%) | 12 (57.1%) | 0.474 | 1.401 (0.555 - 3.538) |
| Increased (> 7.5) | 48 (31.6%) | 8 (38.1%) | 0.550 | 0.750 (0.292 - 1.929) |
| Platelets (× 10*g/L) | ||||
| Decreased (< 140) | 22 (14.5%) | 3 (14.3%) | > 0.999 | 1.015 (0.276 - 3.737) |
| Normal (140 - 450) | 126 (82.9%) | 17 (81.0%) | 0.764 | 1.140 (0.355 - 3.667) |
| Increased (> 450) | 4 (2.6%) | 1 (4.8%) | 0.481 | 0.541 (0.058 - 5.080) |
| CRP (mg/L) | 0.727 | 0.846 (0.331 - 2.161) | ||
| ≤ 100 | 88 (57.9%) | 13 (61.9%) | ||
| ≥ 101 | 64 (42.1%) | 8 (38.1%) | ||
| CXR (BSTI Classification) | ||||
| CVCX0 | 25 (16.4%) | 3 (14.3%) | > 0.999 | 1.181 (0.323 - 4.314) |
| CVCX1 | 59 (38.8%) | 8 (38.1%) | 0.949 | 1.031 (0.403 - 2.637) |
| CVCX2 | 58 (38.2%) | 7 (33.3%) | 0.669 | 1.234 (0.470 - 3.237) |
| CVCX3 | 7 (4.6%) | 3 (14.3%) | 0.106 | 0.290 (0.069 - 1.221) |
| Not done | 3 (2.0%) | 0 (0.0%) | > 0.999 | Inf (Nan - nf) |
| Note: Data in parentheses are 95% confidence intervals. ACCI = Age Adjusted Charlson Comorbidity Index; SIMD = Scottish Index of Multiple Deprivation; CRP = C-Reactive Protein; CXR = Chest X-Ray; BSTI = British Society of Thoracic Imaging. | ||||