Table 2B.
Comparison of pin penetration measurements: aluminum versus titanium.
| Measurements | Aluminuma (n=116) | Titaniuma (n=288) | Mean difference (95% CI) | p Value |
| Absolute depth of pin (A), mm | 0.27 (0.05) | 0.83 (0.03) | −0.55 (−0.68, −0.43) | <0.001 |
| Skull bone thickness (B), mm | 6.01 (0.27) | 5.91 (0.17) | 0.10 (−0.53, 0.74) | 0.742 |
| Relative depth of pin penetration (A/B), % | 5.16 (1.28) | 15.53 (0.81) | −10.36 (−13.38, −7.35) | <0.001 |
a
Values are expressed as estimated marginal means (Std. Error) from the Linear Mixed Mode