Table 3.

Correlation of MMR gene expression level with overall survival in ovarian cancer patients with different pathological grade

MMR genes	Pathological grades	Cases	HR	95% CI	P value
MSH2	I	30	1.24	0.37–4.11	0.72
	II	285	1.06	0.77–1.47	0.71
	III	816	0.99	0.82–1.2	0.95
MSH3	I	30	4.22	1.1–16.12	0.023*
	II	285	1.15	0.83–1.59	0.4
	III	816	1.07	0.88–1.29	0.49
MSH6	I	30	4.76	1.24–18.19	0.013*
	II	285	0.7	0.5–1	0.046*
	III	816	0.74	0.61–0.9	0.0021*
MLH1	I	30	0.48	0.12–1.82	0.27
	II	285	0.68	0.46–1.01	0.055
	III	816	0.73	0.58–0.91	0.0056*
MLH3	I	30	0.9	0.27–2.96	0.86
	II	285	1.08	0.78–1.49	0.66
	III	816	0.93	0.77–1.12	0.42
PMS1	I	30	1.05	0.32–3.44	0.94
	II	285	0.92	0.66–1.27	0.6
	III	816	0.96	0.79–1.16	0.64
PMS2	I	30	0.41	0.09–1.92	0.24
	II	285	0.63	0.45–0.88	0.0071*
	III	816	0.84	0.67–1.04	0.1

*P < 0.05