Table 1

Likelihood ratios for clinical features used to diagnose ACS

Clinical featureLikelihood ratio
Radiation of pain to the right arm or shoulder4.7
Radiation of pain to both arms or shoulders4.1
Associated with exertion2.4
Radiation of pain to the left arm2.3
Associated with diaphoresis2.0
Associated with nausea or vomiting1.9
Worse than angina/similar to previous myocardial infarction1.8
Described as pressure1.3
Described as pleuritic0.2
Described as positional0.3
Described as sharp0.3
Reproduced by palpation0.3
Not associated with exertion0.8