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Table 1 Baseline characteristics of patients in model group and validation group

From: Improve individual treatment by comparing treatment benefits: cancer artificial intelligence survival analysis system for cervical carcinoma

Variable Model group Validation group Group difference
N = 7536 N = 7410 Test value P value
Overall survival [month] 32 (17.54) 31 (17.54) 1.822 0.177
Age [year] 48 (38.59) 47 (38.58) 2.791 0.095
Death [n (%)] 1846 (24.5) 1791 (24.2) 0.198 0.656
PT 0 [n (%)] 1 (0) 6 (0.1) 1.42 0.233
PT 1 [n (%)] 4326 (58.8) 4341 (59.0)   
PT 2 [n (%)] 1782 (24.2) 1643 (22.3)   
PT 3 [n (%)] 1158 (15.7) 1171 (15.9)   
PT 4 [n (%)] 269 (3.7) 249 (3.4)   
PN 1 [n (%)] 2018 (26.8) 1913 (25.8) 1.733 0.188
PM 1 [n (%)] 875 (11.6) 836 (11.3) 0.367 0.545
Stage 1 [n (%)] 3696 (49.9) 3708 (50.0) 1.43 0.232
Stage 2 [n (%)] 1057 (14.3) 1014 (13.7)   
Stage 3 [n (%)] 1764 (23.8) 1721 (23.2)   
Stage 4 [n (%)] 1019 (13.8) 967 (13.0)   
Radiation_Surgery [n (%)] 1971 (24.8) 1872 (25.3) 0.355 0.551
Chemotherapy [n (%)] 3937 (52.2) 3826 (51.6) 0.532 0.466
  1. Continuous variables were expressed as mean ± standard deviation or median (first quartile, third quartile) as appropriate