Figure 1
From: Pre-hospital ECG for acute coronary syndrome in urban India: A cost-effectiveness analysis
Markov model (simplified). "True positive," "false positive," "true negative," and "false negative" describe the general practitioner's referral decision, and the values are based both on the reported test characteristics as well as the prevalence of acute coronary syndrome (ACS). ASA = aspirin, NSTE-ACS = non ST-elevation acute coronary syndrome, STEMI = ST-elevation myocardial infarction.