Pathoanatomic category | Reliability index (95%CI) |
Inter-rater Coding round 1 |
Inter-rater Coding round 2 |
Test-retest (intra-rater) |
---|---|---|---|---|
Intervertebral disc degeneration |
Prevalence* Kappa Percentage agreement |
90.0% (90.0-90.0) 0.99 (0.87-1.00) 99.3% (99.0-100.0) |
90.0% (90.0-90.0) 0.93 (0.82-1.00) 96.7% (95.0-99.0) |
- 0.88 to 1.00 97.3% (94.0-100.0) |
Intervertebral disc bulge |
Prevalence Kappa Percentage agreement |
90.0% (90.0-90.0) 0.96 (0.84-1.00) 98.0% (97.0-99.0) |
85.0% (79.3-90.7) 0.93 (0.80-1.00) 96.7% (95.0-99.0) |
- 0.79 to 0.96 94.3% (91.0-97.0) |
Intervertebral disc herniation |
Prevalence Kappa Percentage agreement |
58.3% (55.1-61.6) 0.94 (0.80-1.00) 98.7% (98.0-99.0) |
58.3% (55.1-61.6) 0.94 (0.80-1.00) 98.7% (98.0-100.0) |
- 0.86 to 0.91 97.3% (97.0-98.0) |
Nerve root compromise |
Prevalence Kappa Percentage agreement |
53.3% (50.1-56.6) 0.76 (0.58-0.94) 96.0% (94.0-98.0) |
55.0% (49.3-60.7) 0.81 (0.63-0.99) 97.3% (96.0-98.0) |
- 0.61 to 0.86 95.3% (94.0-98.0) |
Modic change type 1 |
Prevalence Kappa Percentage agreement |
20.0% (20.0-20.0) 1.00 (0.82-1.00) 100.0% (100.0-100.0) |
21.7% (18.4-24.9) 0.93 (0.75-1.00) 99.3% (99.0-100.0) |
- 0.89 to 1.00 99.7% (99.0-100.0) |
Modic change type 2 |
Prevalence Kappa Percentage agreement |
10.0% (10.0-10.0) 1.00 (0.75-1.00) 100.0% (100.0-100.0) |
8.3% (5.1-11.6) n/a 99.3% (99.0-100.0) |
- 1.00 to 1.00 99.7% (99.0-100.0) |
Spondylolisthesis |
Prevalence Kappa Percentage agreement |
20.0% (20.0-20.0) 1.00 (0.75-1.00) 100.0% (100.0-100.0) |
20.0% (20.0-20.0) 1.00 (0.75-1.00) 100.0% (100.0-100.0) |
- 1.00 to 1.00 100.0% (100.0-100.0) |
Stenosis |
Prevalence Kappa Percentage agreement |
16.7% (13.2-19.9) n/a 99.3% (99.0-100.0) |
15.0% (15.0-15.0) n/a 100.0% (100.0-100.0) |
- n/a 99.7% (99.0-100.0) |
Scoliosis |
Prevalence Kappa Percentage agreement |
5.0% (5.0-5.0) n/a 100.0% (100.0-100.0) |
5.0% (5.0-5.0) n/a 100.0% (100.0-100.0) |
- n/a 100.0% (100.0-100.0) |
Osteophytes |
Prevalence Kappa Percentage agreement |
0.0% (0.0-0.0) n/a 100.0% (100.0-100.0) |
0.0% (0.0-0.0) n/a 100.0% (100.0-100.0) |
- n/a 100.0% (100.0-100.0) |
Facet joint arthrosis |
Prevalence Kappa Percentage agreement |
15.0% (15.0-15.0) 1.00 (0.82-1.00) 100.0% (100.0-100.0) |
15.0% (15.0-15.0) 0.92 (0.74-1.00) 98.7% (98.0-100.0) |
- 0.88 to 1.00 99.3% (98.0-100.0) |
Endplate irregularities |
Prevalence Kappa Percentage agreement |
5.0% (5.0-5.0) n/a 100.0% (100.0-100.0) |
1.7% (0.0-4.9) n/a 99.3% (99.0-100.0) |
- n/a 99.3% (99.0-100.0) |
Red flags |
Prevalence Kappa Percentage agreement |
0.0% (0.0-0.0) n/a 100.0% (100.0-100.0) |
0.0% (0.0-0.0) n/a 100.0% (100.0-100.0) |
- n/a 100.0% (100.0-100.0) |
High intensity zone |
Prevalence Kappa Percentage agreement (%) |
15.0% (15.0-15.0) 1.00 (0.75-1.00) 100.0% (100.0-100.0) |
15.0% (15.0-15.0) 1.00 (0.75-1.00) 100.0% (100.0-100.0) |
- n/a 100.0% (100.0-100.0) |