Table 1

Characteristics of each data set

Development data setsTest data sets
Weakly labeled setExpert labeled setIndependent test setExternal test set
Image numbers, n55 154991300198
Age, mean (SD)46.63 (20.20)51.36 (18.36)52.45 (20.38)60.40 (18.82)
Gender, n (%)
 Male34 822 (63.1)279 (28.2)193 (64.3)98 (49.5)
 Female20 332 (36.9)712 (71.8)107 (35.7)100 (50.5)
Rib fracture, n (%)
 Yes3161 (5.7)726 (73.3)150 (50.0)89 (44.9)
 No51 834 (94.0)265 (26.7)150 (50.0)109 (55.1)
Clavicle fracture, n (%)
 Yes2674 (4.8)331 (33.4)32 (10.7)19 (9.6)
 No52 328 (94.9)660 (66.6)268 (89.3)181 (90.4)
Year of image acquisition2008–20162008–201620172018–2022
  • SD, Standard deviation.