Journal of clinical epidemiology
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To determine empirically chance agreement between different clinicians evaluating physical examination findings in children with acute abdominal pain. ⋯ Expected chance agreement, as calculated from the kappa statistic, is a reasonable reflection of empirically observed chance agreement between clinicians.
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To evaluate the accuracy of Ontario administrative health data for identifying intensive care unit (ICU) patients. ⋯ Administrative databases can be used to identify ICU patients, but no single strategy simultaneously provided high sensitivity, specificity, and PPV. Researchers should consider the study purpose when selecting a strategy for health services research on ICU patients.