| Variable
|
Group (treatment) |
N |
Favourable failure n (%) |
Unfavourable failure n (%) |
x2 statistica (df) |
p-value |
| Failure mode |
A (titanium post, no ferrule effect) |
16 |
6 (37.5) |
10 (62.5) |
39.181(3) |
<0.001 |
| B (titanium post, ferrule effect) |
17 |
0 (0) |
17 (100) |
| C (fiber reinforced composite post, no ferrule effect) |
16 |
14 (87.5) |
2 (12.5) |
| D (fiber reinforced composite post, ferrule effect) |
16 |
0 (0) |
16 (100) |
aChi-square test for independence |
