Table 1.
Agreement summary for consensus MRI and 99mTc-MDP SPECT/CT
| Joint | Concordance | Cohen κ (95% CI) | Prevalence index | Bias index | PABAK (95% CI) |
|---|---|---|---|---|---|
| T12/L1a | 0.95 | 0.000b | −0.95 | −0.05 | 0.90 (0.81, 0.98) |
| L1/L2 | 0.92 | −0.027 (−0.058, 0.004) | −0.92 | −0.05 | 0.83 (0.73, 0.93) |
| L2/L3 | 0.80 | −0.009 (−0.158, 0.139) | −0.78 | −0.10 | 0.60 (0.46, 0.74) |
| L3/L4 | 0.79 | −0.071 (−0.124, −0.019) | −0.79 | −0.13 | 0.58 (0.44, 0.73) |
| L4/L5 | 0.64 | 0.283 (0.140, 0.427) | −0.28 | −0.28 | 0.28 (0.11, 0.45) |
| L5/S1 | 0.68 | 0.035 (−0.051, 0.182) | −0.61 | −0.21 | 0.35 (0.18, 0.52) |
| Overall | 0.026 (−0.051, 0.000) |
MRI, magnetic resonance imaging; 99mTc-MDP SPECT/CT, technetium Tc 99m methylene disphosphonate single-photon emission computed tomography/computed tomography; CI, confidence interval; PABAK, prevalence-adjusted bias-adjusted κ.
a
Two patients (4 facets) did not have readings for T12/L1, and there were no positive consensus assessments for 99mTc-MDP SPECT/CT diagnosis for T12/L1.
b
CI was not estimable from the data.