Prognosis

• elevated troponin T ^{a b}

Elevated troponin T increases the risk of an MI

Patient	Prognostic factor	Outcome	CER	RR  (95% CI)	NNT (95% CI)
unstable angina a	Elevated troponin T   independent	MI   at 3 weeks	2.9%	14  (3.4 to 58)	3  (1 to 14)

 Elevated troponin T increases the risks of requiring coronary revascularisation    

Patient	Prognostic factor	Outcome	CER	OR  (95% CI)	NNT (95% CI)
unstable angina a	Elevated troponin T within 24 hours   independent	coronary revascularisation    at 3 years	22%	3.18  (1.37 to 7.37)	4  (2 to 17)

Elevated troponin increases the risk of dying or having cardiovascular complications

Patient	Prognostic Factor	Outcome	CER	OR (95% CI)	NNF+ (95% CI)
chest pain suggestive of ischaemic heart disease b	troponin I or T 2 mcg/l or more within 24 hours independent	death or MI at 7 months	5.9%	2.5 (2.0 to 3.1)	13 (10 to 19)
		death at 7 months	1.6%	3.1 (2.3 to 4.1)	31 (22 to 50)