Pre-hospital ECG for acute coronary syndrome in urban India: A cost-effectiveness analysis

Table 1 Baseline values for input variables and costs

	Baseline Value	Source(s)
Input variables
Chest pain is caused by ACS	0.1	[19–22]
GP Sensitivity with ECG	0.818	Unpublished data from [8, 11–16]
GP Sensitivity without ECG	0.667	Unpublished data from [8]
GP Specificity with ECG	0.5	[12–16]
GP Specificity without ECG	0.3	[17]
Correctly referred STEMI patients receiving thrombolysis (%)	58.5	[6]
Relative risk reduction of thrombolytics	0.750	[23, 24]
Costs (2007 US$)
GP visit	1.76	[37]
ECG	1.93	[39, 40, 42–44]
Emergency department visit	3.48	[37]
Streptokinase	117.00	[38, 45]
Admission	157.55	[37]
Blood transfusion	107.67	[37]
Stroke	211.37	[37]
Annual secondary prevention	16.56	[37, 38]

ACS = acute coronary syndrome, ECG = electrocardiogram, GP = general practitioner, STEMI = ST-elevation myocardial infarction
Admission costs are for a 5-day admission. The cost of a blood transfusion includes an 3 additional days of hospitalization. The cost of a stroke includes 7 additional days of hospitalization. Annual secondary prevention includes two clinic visits and medications.

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