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Positive predictive value for non-response according to SPECT-CT grade
| SPECT-CT grade | 0 | 1 | 2 | 3 | p-value* |
|---|---|---|---|---|---|
| PPV for non-response in the patella (non-responders/total patients) | 25 % (2/8) | 24 % (6/25) | 62 % (16/26) | 67 % (10/15) | 0.009 |
| PPV for non-response in the trochlea (non-responders/total patients) | 0 % (0/1) | 43 % (9/21) | 50 % (14/28) | 46 % (11/24) | 0.954 |
*Fisher’s exact test, P-value with statistical significance (P < 0.05) is in bold
