Table 3.
Advanced practice physiotherapist diagnostic validity for selected knee disorders compared to the orthopaedic surgeons diagnosis (n=109)
| Sn [95% CI] | Sp [95% CI] | PPV [95% CI] | NPV [95% CI] | LR+[95% CI] | LR-[95% CI] | |
|---|---|---|---|---|---|---|
| Osteoarthritis |
0.95 |
0.99 |
0.98 |
0.97 |
62.9 |
0.05 |
| n= 43† |
[0.85-0.99] |
[0.92-1.00] |
[0.88-1.00] |
[0.90-0.99] |
[9.0-440.6] |
[0.01-0.18] |
| ACL tear |
0.96 |
1.00 |
0.96 |
1.00 |
188.5 |
0.04 |
| n= 12† |
[0.72-1.00] |
[0.95-1.00] |
[0.72-1.00] |
[0.95-1.00] |
[11.9-2998.1] |
[0.003-0.59] |
| Meniscal injury |
0.90 |
0.97 |
0.86 |
0.98 |
26.7 |
0.10 |
| n=20† |
[0.70-0.97] |
[0.91-0.99] |
[0.65-0.95] |
[0.92-0.99] |
[8.7-82.0] |
[0.03-0.39] |
| PFS |
0.86 |
0.97 |
0.8 |
0.98 |
27.1 |
0.15 |
| n= 14† | [0.60-0.96] | [0.91-0.99] | [0.55-0.93] | [0.93-0.99] | [8.7-84.4] | [0.04-0.53] |
† As diagnosed by the orthopaedic surgeon.
ACL = anterior cruciate ligament, PFS=patellofemoral syndrome.
SN= sensitivity, SP=specificity, PPV= positive predictive value, NPV= negative predictive value, LR+ = positive likelihood ratio, LR- = negative likelihood ratio.