Table 3.

Association between OAT expression and clinicopathological characteristics of lung cancers

Characteristics	No.	OAT expression			P
		Negative	Low	High
Age
≤ 60	44	4	15	25	0.164
> 60	48	6	22	20
Gender
Male	65	8	24	33
Female	27	2	13	12	0.794
Histology type
LAC	34	1	16	17	0.712
LSCC	53	8	19	26
SCLC	5	1	2	2
TNM stage
I/II	53	6	29	18	0.004
III/IV	39	4	8	27
Lymphatic invasion
N0	49	6	20	23	0.631
N+	43	4	17	22

P values by Mann–Whitney U or Kruskal‐Wallis test. LAC, lung adenocarcinoma; LSCC, lung squamous cell carcinoma; OAT, ornithine aminotransferase; SCLC, small cell lung cancer.