Research Article

The Value of Pepsinogen in GC Screening: A Systematic Review and Meta-Analysis

Table 2

QUADAS quality evaluation.

Inclusion study(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)

Li et al. [8]YYYYYYYYYNYYUU
Zhang et al. [9]YYYYYYYYYNYYUU
Kang et al. [10]YYYYYYYYYNYYUU
Zhonglin et al. [11]YYYYYYYYYNYYUU
Mizuno et al. [12]YYYYYYYYNNYYUU
Miki et al. [13]YYYYYYYYYNYYUU
Zhang et al. [14]YYYYYYYYYUUYUU
Zhang et al. [15]YYYYYYYYYUUYUU
Yuan [16]YYYYYYYYYYNYUU
Wei et al. [17]YYYYYYYYNUUYUU
Xu et al. [18]YYYYYYYYYYNYUU
Lomba-Viana et al. [19]YYYYYYYYYYNYUY
Nakajima et al. [20]YYYYYYYYYYNYUU
Zhao et al. [21]YYYYYYYYYNYYUU
Yuan [22]YYYYYYYYYNYYUU
Zhang et al. [23]YYYYYYYYYNYYUU
Shikata et al. [24]YYYYYYYYYUUYUY
Juan Cai et al. [25]YYYYYYYYYNYYUU
Castro et al. [26]YYYYYYYYYYNYUY

(1) Does the spectrum of cases contain various cases and/or confusing cases? (2) Is the selection criteria for the study object clear? (3) Can the gold standard accurately distinguish sick from disease-free status? (4) Are the intervals between the gold standard and the test to be evaluated short enough to avoid changes in disease conditions? (5) Are all samples or randomly selected samples accepted gold standard tests? (6) Did all cases receive the same gold standard test regardless of the outcome of the trial to be evaluated? (7) Is the gold standard test independent of the test to be evaluated (i.e., the test to be evaluated is not included in the gold standard)? (8) Is the operation of the test to be evaluated described sufficiently clearly and repeatedly? (9) Is the operation of the gold standard test well described and repeatable? (10) Are the results of the test to be evaluated performed without prior knowledge of the gold standard test? (11) Is the interpretation of the outcome of the gold standard test conducted without knowledge of the test results to be evaluated? (12) Is the clinical data available when interpreting the test results and is it consistent with the clinical data available in the actual application? (13) Have you reported any hard-to-interpret/intermediate test results? (14) Have the cases removed from the study been explained?