Table 2 Comparison of pretest probability estimates for acute coronary syndrome using two techniques in a validation population.
From: Pretest probability assessment derived from attribute matching
Category of Pretest Probability | |||||
|---|---|---|---|---|---|
Very Low (<2%) | Low (2 to <10%) | Moderate (10 to 30%) | High (>30%) | Indeterminate* | |
Attribute Matching | |||||
Number with ACS† | 28 | 189 | 250 | 9 | 125 |
Total in category‡ | 1670 | 2953 | 1453 | 28 | 955 |
Prevalence of ACS | 1.7% | 6.4% | 17.2% | 32.1% | 13.1% |
% of all patients assessed | 23.7% | 41.8% | 20.6% | 0.4% | 13.5% |
Logistic Regression | |||||
Number with ACS† | 4 | 59 | 272 | 266 | NA |
Total in category‡ | 244 | 1356 | 3813 | 1646 | NA |
Prevalence of ACS | 1.6% | 4.4% | 7.1% | 16.2% | NA |
% of all patients assessed | 3.5% | 19.2% | 54.0% | 23.3% | NA |