Concomitant Gastric Acid Suppressants on the Survival of Patients with Non-Small-Cell Lung Cancer Treated with Epidermal Growth Factor Receptor Tyrosine Kinase Inhibitors: A Meta-Analysis

Table 2

Details of study quality evaluation via the Newcastle–Ottawa scale.

Study	Representativeness of the exposed cohort	Selection of the nonexposed cohort	Ascertainment of exposure	Outcome not present at baseline	Control for age	Control for other confounding factors	Assessment of outcome	Enough long follow-up duration	Adequacy of follow-up of cohorts	Total
Hilton 2013	1	1	0	1	1	1	1	1	1	8
Chu 2015	1	1	1	1	1	1	1	1	1	9
Zenke 2016	1	1	1	1	1	1	1	1	1	9
Kumarakulasinghe 2016	1	1	1	1	1	1	1	1	1	9
Chen 2016	1	1	1	1	1	1	1	1	1	9
Sedano 2018	1	1	1	1	1	1	1	1	1	9
Sharma 2019	0	1	1	1	1	0	1	1	1	7
Fang 2019	1	1	1	1	1	0	1	1	1	8
Kwok 2020	0	1	1	1	1	1	1	1	1	8
Guo 2020	1	1	1	1	1	1	1	1	1	9
Su 2020	1	1	1	1	1	1	1	1	1	9
Saito 2021	1	1	1	1	1	1	1	1	1	9
Li 2021	1	1	1	1	1	1	1	1	1	9