Classification system | No. of clusters | Percent agreement | Kappa coefficient (κ) |
---|---|---|---|
MPI Classification System | 3 | 75–82% | 0.58–0.70 (current study) |
Treatment Based Classification | 3 | 65% | 0.49–0.56 [30] |
76% | 0.60 [31] | ||
31–55% | 0.14–0.45 [32] | ||
79–81% | 0.14 [33] | ||
58–90% | 0.11–0.77 [34] | ||
O’Sullivan Classification System | 5 | 70–97% | 0.61 (0.47–0.80) [35] |
73–92% | 0.65 (0.57–0.74) [36] |