Admission rate and length of hospital stay after admission of each group based on the combinatin of cTnI and BNP levels. Length of hospital stay presented as median value and interquartile ranges are as follows: 5–19, 3–13, and 5–20 days for both positive, cTnI positive only, and BNP positive only groups, respectively. Abbreviations: cTnI, cardiac troponin I; BNP, B-type natriuretic peptide.