PD-L1, FGFR1, PIK3CA, PTEN, and p16 expression in pulmonary emphysema and chronic obstructive pulmonary disease with resected lung squamous cell carcinoma

Table 2 Comparison of patient characteristics based on total emphysema, local emphysema, COPD, and GOLD stage

Factors	none-mild	moderate-severe	P value	No Local emphysema	Local emphysema	P value	No COPD	COPD	P value	GOLD1	GOLD2,3	P value
SEX
Male	33	17	0.78	18	32	0.54	26	24	0.59	34	16	0.14
Female	7	2		5	4		3	6		3	6
Smoking
Never	2	0	0.61	2	0	0.2	2	0	0.34	2	0	0.54
Ever	38	19		21	36		27	30		35	22
Stage
I	27	11	0.63	16	22	0.84	21	17	0.62	28	10	0.17
II	10	6		5	11		7	9		7	9
III	3	1		2	2		1	3		2	2
recurrence	0	1		0	1		0	1		0	1

ISSN: 1471-2466