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Table 2 Estimates from univariate regression analysis (independent association between predictor variables and failed implants)

From: Failure rates of mini-implants placed in the infrazygomatic region

Predictor variable Estimate Odds ratio p value
Age <18 years −0.1182 0.89 0.86
≥18 years Reference
Gender Female −1.1383 0.32 0.11
Male Reference
Presence of medical condition Yes 1.50 4.48 0.14
No Reference
Lomas (Mondeal, Tuttligen, Germany) Yes −0.7983 0.45 0.31
No Reference
Diameter of implant 1.50 or 1.80 0.5630 1.76 0.40
2.00 or 2.30 Reference
Length of implant 6 to 8 mm 0.7078 2.03 0.37
9 mm Reference
Force 150 g −0.4282 0.65 0.59
>150 g Reference
Type of movement Purely intrusive −0.6377 0.53 0.34
All others Reference
Oral hygiene Poor 1.0269 2.79 0.09
Good Reference
Operator experience Experienced −0.3145 0.73 0.6848
Inexperienced Reference
Use of pilot hole Yes −0.8610 0.42 0.32
No Reference
Side of implant Left 0.3962 1.49 0.53
Right Reference