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

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

	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

m: mean (frequency) if the covariate is continuous (binary) / % bias, also known as the standardized difference of the mean
HGSC High-Grade Serous Carcinoma, LGSC Low-Grade Serous Carcinoma

ISSN: 1472-6963