Shimizu 1994.
Study characteristics | |||
Patient sampling | Retrospective study | ||
Patient characteristics and setting | Sample size: 128. Age: unreported. Gender: unreported Patients diagnosed with gastric cancer (any site) and undergoing surgery Spectrum: T1 ‐ T4 cases enrolled |
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Index tests | Index test: EUS; array: unreported; frequency (MHz): 7.5 ‐ 12; criterion for T‐stage definition: EUS‐based 5‐layer structure of gastric wall | ||
Target condition and reference standard(s) | Target conditions: gastric carcinoma 1) T1 ‐ T2 (90/128) vs T3 ‐ T4, 2) T1 (77/84) vs T2, 3) T1a (45/71) vs T1b Reference standard: pathology evaluation of surgical specimen Reference and index test completely independent |
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Flow and timing | No withdrawal reported No uninterpretable findings reported All cases verified by reference standard test | ||
Comparative | |||
Notes | Country: Japan Relevant clinical information: same clinical data available for test results interpretation as those available when test used in practice |
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Methodological quality | |||
Item | Authors' judgement | Risk of bias | Applicability concerns |
DOMAIN 1: Patient Selection | |||
Was a consecutive or random sample of patients enrolled? | Yes | ||
Was a case‐control design avoided? | Yes | ||
Did the study avoid inappropriate exclusions? | Yes | ||
Low | Low | ||
DOMAIN 2: Index Test All tests | |||
Were the index test results interpreted without knowledge of the results of the reference standard? | Yes | ||
If a threshold was used, was it pre‐specified? | Yes | ||
Low | Low | ||
DOMAIN 3: Reference Standard | |||
Is the reference standards likely to correctly classify the target condition? | Yes | ||
Were the reference standard results interpreted without knowledge of the results of the index tests? | Unclear | ||
Unclear | Unclear | ||
DOMAIN 4: Flow and Timing | |||
Was there an appropriate interval between index test and reference standard? | Unclear | ||
Did all patients receive the same reference standard? | Yes | ||
Were all patients included in the analysis? | Yes | ||
Unclear |