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Table 2 The surgico-pathological characters and treatment-related variables of EOC patients with or without EM

From: Endometriosis is the independent prognostic factor for survival in Chinese patients with epithelial ovarian carcinoma

  NON-EAOC EAOC P
FIGO Stagea    <.0001*
 I 92 (39.15%) 49 (71.01%)  
 II 32 (13.62%) 12 (17.39%)  
 III 97 (41.28%) 7 (10.14%)  
 IV 14 (5.96%) 1 (1.45%)  
Early or late Stage    <.0001*
 I + II 124 (52.77%) 61 (88.41%)  
 III + IV 111 (47.23%) 8 (11.59%)  
Lymphadenectomy    0.0160*
 Yes 189 (80.43%) 64 (92.75%)  
 No 46 (19.57%) 5 (7.25%)  
Residual disease    0.0002*
 No or <1 cm 167 (71.06%) 64 (92.75%)  
  > 1 cm 68 (28.94%) 5 (7.25%)  
Metastasis of lymph node    0.0060*
 Yes 35 (14.89%) 5 (7.25%)  
 No 154 (65.53%) 59 (85.51%)  
 Not-dissected 46 (19.57%) 5 (7.25%)  
Histotype    0.0041*
 Clear cell 81 (34.47%) 37 (53.62%)  
 Endometrioid 154 (65.53%) 32 (46.38%)  
Endometrial disorders    0.0808*
 Yes 45 (19.15%) 7 (10.14%)  
 No 190 (80.85%) 62 (89.86%)  
Endometrial cancer    0.051
 Yes 25 (23.8%) 2 (7.4%)  
 No 211 (76.2%) 66 (92.6%)  
Chemotherapy    0.6250
 Platinum-based 224 (95.32%) 67 (97.1%)  
 Other regimen 3 (1.28%) 0 (0%)  
 No chemotherapy 8 (3.4%) 2 (2.9%)  
Chemo Cycles 6.36 ± 2.33 5.70 ± 2.05 0.039*
Chemo-resistance    0.0149*
 Yes 47 (20%) 5 (7.35%)  
 No 188 (80%) 63 (92.65%)  
  1. Abbreviation: EOC, epithelial ovarian carcinoma; FIGO, International Federation of Gynecology and Obstetrics; EM, endometriosis; EAOC, endometriosis-associated ovarian cancer
  2. *the difference reached statistical significance
  3. aaccording to the classification system of FIGO staging (2013 version)