Adenosquamous carcinoma may have an inferior prognosis to signet ring cell carcinoma in patients with stages I and II gastric cancer

Table 3 Comparison of median survival of the patients before and after propensity score matching

	Patients, n	Median CSS 95%CI, mo	Median OS 95%CI, mo
Before PSM
SRC	5968	16.0 (15.2-16.8)	15.0 (14.3-15.7)
ASC	95	13.0 (9.7-16.3)	12.0 (9.5-14.5)
P value		0.101	0.084
After PSM
SRC	370	20.0 (15.7-24.3)	19.0 (14.9-23.1)
ASC	95	13.0 (9.7-16.3)	12.0 (9.5-14.5)
P value		0.027	0.017

CSS: Cancer-specific survival; OS: Overall survival; PSM: Propensity-score matching; SRC: Signet ring cell carcinoma; ASC: Adenosquamous carcinoma.