Table 2. The association of polymorphisms in microRNA 30c-1 and microRNA 27a with overall survival.

SNP	Genotypes	Num	MST	Log-rank P value	HR	95% CI (P value)	aHR	95% CI (P value)
microRNA 30c-1	AA	133	28.44	0.054	1.00		1.00
rs928508	AG	229	23.20		1.28	1.01–1.61 (0.041)	1.30	1.03–1.65 (0.027)
	GG	92	21.95		1.37	1.03–1.83 (0.033)	1.45	1.08–1.94 (0.012)
	AG	229	23.20	0.592	1.00		1.00
	GG	92	21.95		1.07	0.83–1.39 (0.593)	1.09	0.84–1.43 (0.514)
	AA/AG	362	25.25	0.188	1.00		1.00
	GG	92	21.95		1.18	0.92–1.51 (0.190)	1.24	0.96–1.59 (0.097)
	AA	133	28.44	0.019	1.00		1.00
	AG/GG	321	22.86		1.30	1.04–1.62 (0.020)	1.34	1.07–1.67 (0.010)
	A allele	495	26.04	0.022	1.00		1.00
	G allele	413	22.63		1.18	1.02–1.36 (0.023)	1.21	1.05–1.39 (0.009)
microRNA 27a	TT	247	26.27	0.033	1.00		1.00
rs895819	CT	167	23.71		1.17	0.95–1.45 (0.143)	1.23	0.99–1.52 (0.062)
	CC	40	18.25		1.56	1.09–2.22 (0.014)	1.71	1.20–2.45 (0.003)
	CT	167	23.71	0.100	1.00		1.00
	CC	40	18.25		1.35	0.94–1.95 (0.102)	1.44	1.00–2.08 (0.050)
	CT/TT	414	25.23	0.030	1.00		1.00
	CC	40	18.25		1.46	1.04–2.05 (0.031)	1.57	1.11–2.21 (0.010)
	TT	247	26.27	0.041	1.00		1.00
	CC/CT	207	22.79		1.23	1.01–1.50 (0.042)	1.30	1.06–1.50 (0.012)
	T allele	661	25.62	0.011	1.00		1.00
	C allele	247	22.14		1.22	1.05–1.43 (0.012)	1.28	1.09–1.49 (0.002)

*Num: the patients number for each genotype, aHR: adjusted HR for histological type, clinical stage and, receipt of chemotherapy and surgery.