Table 4 The results of subgroup analysis
Variable | Number | Pooled sensitivity | I 2 (%) | Pooled specificity | I 2 (%) | Positive likelihood ratio | Negative likelihood ratio | Diagnostic odds ratio |
|---|---|---|---|---|---|---|---|---|
Retrospective | 3 | 0.729 (0.664–0.789) | 60.2 % | 0.846 (0.807–0.879) | 0.0 | 4.628 (3.627–5.904) | 0.350 (0.239–0.514) | 14.358 (9.519–21.655) |
Prospective | 7 | 0.898 (0.860–0.929) | 78.8 % | 0.625 (0.600–0.650) | 97.1 | 6.152 (2.387–15.857) | 0.156 (0.072–0.342) | 43.259 (10.752–174.0) |
Field strength (1.5 T) | 8 | 0.841 (0.806–0.872) | 85.0 % | 0.678 (0.655–0.699) | 97.1 | 6.513 (2.884–14.711) | 0.195 (0.12–0.314) | 31.716 (15.746–63.884) |
Field strength (3.0 T) | 2 | 0.732 (0.640–0.811) | 18.2 % | 0.738 (0.682–0.789) | 95.2 | 2.716 (0.874–8.438) | 0.409 (0.197–0.849) | 6.644 (1.086–40.634) |
b value <1000 (s/mm2) | 8 | 0.867 (0.831–0.899) | 82.0 % | 0.646 (0.6239–0.669) | 97.1 | 5.801 (2.575–13.066) | 0.177 (0.09–0.323) | 35.007 (12.019–101.96) |
b value ≥1000 (s/mm2) | 2 | 0.769 (0.696–0.832) | 86.8 % | 0.861 (0.814–0.901) | 71.1 | 4.888 (2.753–8.679) | 0.264 (0.120–0.580) | 19.496 (5.243–72.498) |