Table 4 Z-score for two population proportions
From: Early postoperative compilations of bone filling in curettage defects
| Â | Our rates (%) | n | Literature rates (%) | N | Z-score | P value |
|---|---|---|---|---|---|---|
Allograft | 2.70 | 74 | 3.24 | 401 | − 0.244 | 0.810 |
Bone graft substitute | ||||||
 Calcium sulfate |  |  | 6.52 | 138 | − 0.849 | 0.395 |
 Calcium phosphate | 4.13 | 121 | 3.48 | 661 | 0.355 | 0.719 |
 All |  |  | 4.21 | 950 | − 0.040 | 0.968 |
PMMA | 7.41 | 54 | 5.59 | 483 | 0.543 | 0.589 |