Figure 1
From: Can we monitor heart attack in the troponin era: evidence from a population-based cohort study
Box plots of distribution of maximum values for troponin I and T according to HMDC coding of MI or not MI in cases classified as AHA Definite or Probable MI (Positive MI) based on positive troponin tests but non-specific or normal ECGs in the 2003 validation sample. + indicates mean value of distribution; • indicates extreme values beyond the y-axis scale. MI-HMDC represents true-positives and HMDC Not MI represents false-negatives. HMDC: Hospital Morbidity Data Collection; MI: myocardial infarction. a p < 0.0001 and b p = 0.0006 for MI vs not MI (two-sided Wilcoxon rank sum test with normal approximation).