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Table 4 Univariate analysis of clinical factors with 5-year OS

From: Chemotherapy is not necessary for early-stage serous and endometrioid ovarian cancer after undergoing comprehensive staging surgery

Characteristics No. 5-year OS, % P-value
Chemotherapy    0.245
 No/Unknown 925 50.2  
 Yes 925 45.8  
Age, year    < 0.001
  ≤ 45 342 51.5  
 45–65 1007 49.3  
  > 65 501 43.1  
Race    0.833
 White 1561 48.9  
 Non-white 289 43.3  
Stage    0.354
 IA 974 50.2  
 IB 106 49.1  
 IC 602 47.0  
 IIA 168 38.1  
Grade    0.908
 1 1176 51.2  
 2 674 42.4  
Laterality    0.163
 Right 790 46.7  
 Left 806 50.5  
 Other/Unknown 254 44.1  
Tumor size, cm    0.014
  ≤ 10 830 45.5  
  > 10 777 44.8  
 Unknown 243 66.7  
Histology    < 0.001
 Serous 490 38.4  
 Endometrioid 1360 51.5  
  1. P < 0.05 was considered to indicate a statistically significant difference. OS overall survival