Table 1 Criteria for the percentage of nonoverlap data (PND) for interventional effectiveness [5]
PND value | Interventional effectiveness |
|---|---|
PND ≥ 90% | Very effective treatment |
70% ≤ PND < 90% | Effective treatment |
50% ≤ PND < 70% | Questionable treatment |
PND < 50% | Ineffective treatment |