Age, (years)†	Gender	Typical or Definite Angina Pectoris	Atypical or Probable Angina Pectoris	Nonanginal Chest Pain	No Symptoms
30-39	Male	Intermediate	Intermediate	Low	Very low
	Female	Intermediate	Very low	Very low	Very low
40-49	Male	High	Intermediate	Intermediate	Low
	Female	Intermediate	Low	Very low	Very low
50-59	Male	High	Intermediate	Intermediate	Low
	Female	Intermediate	Intermediate	Low	Very low
60-69	Male	High	Intermediate	Intermediate	Low
	Female	High	Intermediate	Intermediate	Low

Table1 Pretest Probability of CAD

Adapted from Gibbons RJ, Balady GJ, Beasley JW, et al: ACC/AHA guidelines for exercise testing: Executive summary. A report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee on Exercise Testing). Circulation 1997;96:345-354. * High probability, >90%; intermediate, 10%—90%; low, <10%; very low, <5%. † No data exist for patients aged >30 years or < 69 years, but it can be assumed that the prevalence of CAD increases with age. In a few cases, patients at the extremes of each decade may have probabilities slightly outside the high or low range.

Risk Group	Annual Mortality Rate
Low (>4)	0.25%
Intermediate (-10-4)	1.25%
High (>-10)	5.0%

Table2 Duke Treadmill Scoring System*

* The Duke treadmill score is calculated according to the following formula: Exercise time (min) -5 (max ST-segment deviation [in mm, during or after exercise]) -angina score where the score is 0 if there is no angina, 4 if angina occurs, and 8 if angina is the reason for stopping the test Adapted from Mark DB, Shaw L, Harrell FE Jr, et al: Prognostic value of a treadmill exercise score in outpatients with suspected coronary artery disease. N Engl J Med1991;325:849-853.