Table 1.

Correlations between KCNQ1OT1 and clinicopathologic features of LUAD patients.

	Total	No. of patientsa		Chi-square test P value
		High KCNQ1OT1 (24)	Low KCNQ1OT1 (26)
Gender				0.412
Male	28	12	16
Female	22	12	10
Age				0.094
≤60	21	13	8
>60	29	11	18
Tumor size				0.011*
≤5 cm	24	7	17
>5 cm	26	17	9
Location of tumor				0.981
Left (upper/lower)	23	11 (3/8)	12 (2/10)
Right(upper/middle/lower)	27	13 (2/5/6)	14 (2/6/6)
Differentiation				0.089
Well	10	5	5
Moderately	22	7	15
Poorly	18	12	6
Clinical stage				0.021*
I/II	23	7	16
III/IV	27	17	10

*P < 0.05.

^aThe mean expression of KCNQ1OT1 in lung adenocarcinoma tissues was used as a cutoff to divide samples into a high or low subgroup.