Table 3.
Analysis of FP, FN and TN.
| Total | Age | p-value | Sex (Male) | ||
|---|---|---|---|---|---|
| FP (n = 66) | |||||
| Treated for COVID-19 (A) | 25 (37.9) | 62.7 (17−86) | 15 (60) | ||
| Not treated for COVID-19 (B) | 14 (21.2) | 72.1 (35−91) | 0.024 | 4 (28.6) | 0.165 |
| Data unknown (C) | 27 (40.9) | 56.4 (22−96) | 12 (44.4) | ||
| A x B | 0.310* | 0.187* | |||
| A x C | 0.553* | 0.789* | |||
| B x C | 0.020* | 1.000* | |||
| FN (n = 43) | |||||
| Completely negative CT scan (D) | 20 (46.5) | 49.8 (23−100) | 7 (35) | ||
| Confounding pathologies (E) | 16 (37.2) | 74.9 (35−88) | 0.002 | 11 (68.7) | 0.236 |
| No confounding pathologies (F) | 7 (16.3) | 59 (42−86) | 4 (57.1) | ||
| D x E | 0.230* | 1.000* | |||
| D x F | 0.001* | 0.280* | |||
| E x F | 0.856* | 1.000* | |||
| TN (n = 245) | |||||
| Completely negative CT scan | 138 (56.3) | 50.1 (16−94) | 48 (34.8 %) | ||
| Positive CT scan | 107 (43.7) | 70.1 (17−97) | <0.001 | 61 (57 %) | 0.032 |
|
11 (4.5) | 67.6 (48−89) | 9 (81.8) | ||
|
28 (11.4) | 79.9 (47−96) | 11 (39.3) | ||
|
14 (5.7) | 66.8 (33−88) | 10 (71.4) | ||
|
28 (11.4) | 66.1 (17−90) | 12 (42.8) | ||
|
13 (5.3) | 64.2 (41−87) | 10 (76.9) | ||
|
9 (3.7) | 74.3 (42−97) | 7 (77.8) | ||
|
4 (1.6) | 58 (40−73) | 3 (75) | ||
Note: data are patients with percentages in parentheses. Age is mean ± standard deviation.
Abbreviation: RT-PCR, reversed transcription polymerase chain reaction; FP, false positive; FN, false negative; COPD, chronic obstructive pulmonary disease; CHF, congestive heart failure.
*
Multivariate analysis conducted with Bonferroni Test.