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Table 6 Cox regression analyses for cumulative incidence of peri-implantitis

From: Retrospective cohort study of rough-surface titanium implants with at least 25 years’ function

 

Hazard ratio

95% confidence interval

p value

Gender (male)

2.38

1.138~5.362

0.0208

Implant type (TPS)

4.35

1.897~9.941

0.0006

Implant position (maxilla to mandibular/anterior)

6.08

1.384~24.436

0.0188

Implant position (maxilla to mandibular/posterior)

3.45

0.903~11.111

0.0679

Implant position (mandibular/anterior to mandibular/posterior)

0.57

0.207~1.442

0.2370

Additional soft tissue management (yes)

1.18

0.535~2.714

0.6826

Width of keratinized mucosa (> 2 mm)

0.24

0.094~0.559

0.0006