Table 7.

PD-L1 expression in IICs and demographic data.

Variable	Categories	Negative		Positive		p value
		N	(%)	N	(%)
Age	<60	50	40.7	23	53.5	0.144
	>60	73	59.3	20	46.5
Gender	Female	41	33.3	19	44.2	0.202
	Male	82	66.7	24	55.8
Race	Non-white	21	17.6	8	18.6	0.888
	White	98	82.4	35	81.4
ECOG	0	57	64.8	22	66.7	0.845
	1	31	35.2	11	33.3
Smoking	No	23	19	15	34.9	0.084
	Active	38	31.4	13	30.2
	Former	60	49.6	15	34.9
Alcohol consumption	No	67	60.9	24	63.2	0.934
	Active	29	26.4	10	26.3
	Former	14	12.7	4	10.5

ECOG: Eastern Cooperative Oncology Group performance status.