Potential predictors of success with foot orthoses at 12 weeks (pretest success 40%)
| Variable | Sensitivity | Specificity | Positive likelihood ratio | Post-test (%) |
|---|---|---|---|---|
| Age over 25 years | 0.82 (0.56 to 0.95) | 0.56 (0.35 to 0.75) | 1.9 (1.1 to 3.1) | 57 |
| Height less than 165 cm | 0.41 (0.19 to 0.67) | 0.92 (0.72 to 0.99) | 4.9 (1.2 to 20.9) | 77.3 |
| Mid-foot width difference greater than 10.96 mm | 0.56 (0.23 to 0.85) | 0.81 (0.54 to 0.95) | 3.0 (0.91 to 9.6) | 67.6 |
| Arch height ratio less than 0.34 | 0.33 (0.09 to 0.69) | 0.82 (0.56 to 0.95) | 1.9 (0.47 to 7.5) | 57 |
| Worst pain* less than 53.25 mm | 0.53 (0.29 to 0.76) | 0.64 (0.43 to 0.81) | 1.5 (0.74 to 2.9) | 51 |
| Usual pain* less than 24.75 mm | 0.35 (0.15 to 0.61) | 0.92 (0.72 to 0.99) | 4.4 (1.0 to 19.3) | 75.4 |
| AKP scale† score greater than 66.5 | 0.82 (0.56 to 0.95) | 0.48 (0.28 to 0.68) | 1.5 (1.0 to 2.4) | 51 |
| FIQ‡ score greater than 9.5 | 0.76 (0.50 to 0.92) | 0.56 (0.35 to 0.75) | 1.7 (1.0 to 2.9) | 54.2 |
| Overall comfort less than 77.5 mm | 0.33 (0.13 to 0.61) | 0.81 (0.57 to 0.94) | 1.8 (0.56 to 5.44) | 55.6 |