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Table 2 Positive predictive value for non-response according to SPECT-CT grade

From: Value of SPECT-CT Imaging for Middle-Aged Patients with Chronic Anterior Knee Pain

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
  1. *Fisher’s exact test, P-value with statistical significance (P < 0.05) is in bold