Table 4.
Differences in proportion and concordance for imaging test ordered between the advanced practice physiotherapist and orthopaedic surgeons (n=120)
| Tests ordered by MD (%) | Tests ordered by APP (%) | Chi-squared test | p value | Raw agreement proportion | Cohen’s kappa | 95% CI | |
|---|---|---|---|---|---|---|---|
| Any type of imaging tests† |
67/120 (56) |
79/120 (65) |
2.518 |
0.113 |
82% |
0.65 |
0.52 – 0.79 |
| X-rays |
50/120 |
60/120 |
1.678 |
0.195 |
75% |
0.48 |
0.33 – 0.64 |
| |
(42) |
(50) |
|
|
|
|
|
| MRI |
15/120 |
19/120 |
0.548 |
0.459 |
92% |
0.66 |
0.46 – 0.85 |
| |
(13) |
(16) |
|
|
|
|
|
| CT scan with contrast |
20/120 |
24/120 |
|
|
|
|
|
| (17) | (20) | 0.445 | 0.505 | 96% | 0.78 | 0.63 – 0.93 |
MD= orthopaedic surgeon, APP= advanced practice physiotherapist, MRI= Magnetic resonance imaging, CT= computed tomography.
† More than one type of imaging tests may be ordered for each patient.