Table 1.
Baseline characteristics of study participants (N=300).
| Variables | Values | ||
| Age (years), median (IQRa) | 52.0 (39.0-61.0) | ||
| Age (years), n (%) | |||
|
|
>60 | 89 (29.7) | |
|
|
<60 | 211 (70.3) | |
| Sex, n (%) | |||
|
|
Male | 159 (53) | |
|
|
Female | 141 (47) | |
| Oxygen saturationb, n (%) | |||
|
|
Normal | 132 (44) | |
|
|
Mild to moderate hypoxia | 18 (6) | |
|
|
Severe hypoxia | 25 (8.3) | |
| RT-PCRc, n (%) | |||
|
|
Positive | 97 (32.3) | |
|
|
Negative | 203 (67.7) | |
| Disease severity, n (%) | |||
|
|
Mild | 42 (14) | |
|
|
Moderate | 178 (59.3) | |
|
|
Severe | 27 (9) | |
|
|
Critical | 53 (17.7) | |
| Comorbidities, n (%) | |||
|
|
Diabetes mellitus | 77 (25.7) | |
|
|
Hypertension | 96 (32) | |
|
|
COPDd | 2 (0.7) | |
|
|
Asthma | 4 (1.3) | |
|
|
Pulmonary tuberculosis | 16 (5.3) | |
| ARDSe, n (%) | 45 (15) | ||
| Length of stay (days), median (IQR) | 8.0 (4.0-13.3) | ||
| Overall CXRf score-Brixia score, median (IQR) | 3.00 (0.0-9.5) | ||
| AIg-CAD4COVID, median (IQR) | |||
|
|
Probability scoreh | 62.0 (35.75-83.25) | |
|
|
ALAi scorej | 6.5 (1.0-27.0) | |
aNormally distributed data are presented as mean (SD). Otherwise, it is presented as median (IQR).
bThe sum of participants falls short of 300 since room air peripheral oxygen saturation data was missing for 125 patients.
cRT-PCR: reverse transcription–polymerase chain reaction.
dCOPD: chronic obstructive pulmonary disease.
eARDS: acute respiratory distress syndrome.
fCXR: chest x-ray.
gAI: artificial intelligence.
hHigher AI probability scores are commensurate with a higher COVID-19 probability.
iALA: affected lung area.
jHigher AI scores of affected lung area are commensurate with a larger affected lung area.