Table 1 Results of meta-regression
Variable | Sensitivity | Specificity |
|---|---|---|
Setting for recruitment | 0.14 | 0.43 |
DVT prevalence | <0.001 | 0.11 |
Proportion of proximal DVT | 0.04 | 0.14 |
Mean age | 0.36 | 0.17 |
Proportion of males | 0.66 | 0.24 |
Consecutive recruitment | 0.78 | 0.55 |
Prospective study | 0.26 | 0.24 |
Radiologist interpreted | 0.064 | 0.52 |
Sonographer interpreted | 0.52 | 0.44 |
Ultrasound performed blind to reference standard | 0.44 | 0.52 |
Reference standard performed blind to ultrasound | 0.59 | 0.56 |
Previous DVT excluded | 0.92 | 0.039 |
Date of publication | 0.057 | 0.84 |