Variables PDC GSIJD SLS Sensitivity 0.91 0.57 0.67 Specificity 0.56 0.91 0.84 PPV 0.58 0.80 0.74 NPV 0.90 0.76 0.79 P LR 2.10 6.33 4.19 NLR 0.47 0.47 0.39 95% CI 0.60, 0.87 0.64, 0.92 0.63, 0.91 PPV=Positive Predictive Value; NPV= Negative Predictive Value; PLR= Positive Likelihood Ratio; NLR= Negative Likelihood Ratio; 95% CI=95% Confidence Interval

Table 5: Sensitivity, Specificity, Likelihood Ratios and Predictive Values for Posterior Dimple Compression (PDC), Gross Sacro-Iliac Joint Distraction (GSIJD) and Supine-Long Sitting (SLS) Tests