Table 5.
Clinical factors that independently predict left ventricular dysfunction, and their sensitivity, specificity, and positive likelihood ratio
| Variable | Odds ratio (95% CI)* | Sensitivity (%) | Specificity (%) | Positive likelihood ratio |
|---|---|---|---|---|
| History | ||||
| Breathlessness when walking | 2.3 (0.9 to 6.4) | 15 (9/60) | 97 (730/751) | 5.4 |
| Examination | ||||
| Jugular venous pressure >5 cm | 2.4 (0.8 to 6.8) | 11 (7/61) | 97 (721/745) | 3.6 |
| Basal crepitations | 2.4 (1.3 to 4.3) | 44 (6/61) | 82 (727/751) | 2.4 |
| Bilateral peripheral oedema | 1.9 (0.9 to 4.1) | 18 (11/61) | 91 (684/751) | 2.0 |
| Past history | ||||
| Myocardial infarction | 3.8 (1.9 to 7.4) | 39 (24/61) | 91 (686/756) | 4.3 |
| Angina | 2.6 (1.4 to 5.0) | 48 (29/61) | 84 (637/756) | 3.3 |
*
Adjusted for other factors by multivariate analysis (see text).