Table 1 Characteristics of the study population and of patients with a report mentioning the presence of ground glass opacities and subpleural abnormal findings on chest CT scan (i.e. ‘target reports’)
Characteristics | All patients (n = 49,311) | Target reports (n = 146) |
|---|---|---|
Sex | ||
Women | 23,636/49,311 (47.9%) | 56/146 (38.4%) |
Men | 25,675/49,311 (52.1%) | 90/146 (61.6%) |
Age (years) | ||
Mean ± SD | 57.7 ± 22.7 | 64.3 ± 19.7 |
Median (range) | 59.9 (0–100.1) | 67.1 (15.3–95.7) |
Contrast medium injection | ||
No | 11,607/49,311 (23.5%) | 47/146 (32.2%) |
Yes | 37,704/49,311 (76.5%) | 99/146 (67.8%) |
Coverage of the chest | ||
Entirely | 16,708/49,311 (33.9%) | 137/146 (93.8%) |
Partly (top) | 10,138/49,311 (20.6%) | 3/146 (2.1%) |
Partly (bottom) | 20,531/49,311 (41.6%) | 6/146 (4.1%) |
Partly (dorsal spine) | 1934/49,311 (3.9%) | 0/146 (0%) |
No. of positive text features | ||
0 | 46,207/49,311 (93.7%) | 0/146 (0%) |
1 | 2539/49,311 (5.1%) | 0/146 (0%) |
2 | 494/49,311 (1%) | 97/146 (66.4%) |
3 | 65/49,311 (0.1%) | 43/146 (29.5%) |
4 | 6/49,311 (0.01%) | 6/146 (4.1%) |
Presence of GGO | ||
Positive | 1721/49,311 (3.5%) | 146/146 (100%) |
Presence of intralobular reticulation | ||
Positive | 263/49,311 (0.5%) | 33/146 (22.6%) |
Presence of bilateral lung abnormalities | ||
Positive | 1324/49,311 (2.7%) | 22/146 (15.1%) |
Presence of subpleural lung abnormalities | ||
Positive | 438/49,311 (0.9%) | 146/146 (100%) |