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Table 1 Patient characteristics at baseline (threshold of 12 patients)

From: Being treated in higher volume hospitals leads to longer progression-free survival for epithelial ovarian carcinoma patients in the Rhone-Alpes region of France

  Low-volume hospital (n = 78 patients) High-volume hospital (n = 189 patients)   
  m m P-value %bias
Age 63.78 66.10 0.193 17.9
Cancer history 0.14 0.17 0.622 6.6
Ascites 0.60 0.69 0.148 19.7
Histology:
 - HGSC 0.20 0.62 0.142 20.4
 - LGSC 0.06 0.04 0.443 −11.0
 - Mucinous 0.10 0.03 0.048 −30.2
 - Endometrioid 0.14 0.13 0.867 −2.3
 - Clear cell 0.06 0.04 0.421 −11.4
 - Unknown 0.11 0.15 0.447 10.2
FIGO Stage:
 - I 0.25 0.13 0.026 −31.8
 - II 0.05 0.08 0.438 10.1
 - III 0.56 0.69 0.046 27.5
 - IV 0.14 0.10 0.458 −10.3
Tumor Grade:
 - 1 0.16 0.05 0.019 −35.8
 - 2 0.20 0.14 0.216 −18.0
 - 3 0.63 0.81 0.006 40.3
Chemotherapy:
 - Neoadjuvant only 0.17 0.12 0.228 −16.8
 - Post-surgery only 0.47 0.33 0.047 −27.1
 - Neoadjuvant & post-surgery 0.18 0.45 0.001 60.2
 - None 0.18 0.10 0.115 −22.3
Reoperation 0.34 0.12 0.001 −54.1
No residual disease after debulking surgery 0.70 0.45 0.001 50.5
    Mean: 24.3
    Median: 20.1
  1. m: mean (frequency) if the covariate is continuous (binary) / % bias, also known as the standardized difference of the mean
  2. HGSC High-Grade Serous Carcinoma, LGSC Low-Grade Serous Carcinoma