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Table 4 Factors influencing sinus mucosal thickness (< 0.8 mm rate: odds ratio)

From: Factors influencing the sinus membrane thickness in edentulous regions: a cone-beam computed tomography study

Variable Category (< 0.8 mm rate) OR2 P value
Sex Male: 38.5% 2.00 0.31
Female: 55.6%
Age < 55 years: 66.7% 3.00 0.10
≥ 55 years: 40.0%
Systemic diseases +: 33.3% 2.43 0.26
−: 54.8%
Time after tooth extraction < 6 months: 21.4% 6.93 0.008**
≥ 6 months: 65.4%
Smoking +: 44.4% 1.33 0.70
−: 51.6%
Reason for tooth extraction per (+): 42.9% 1.56 0.51
per (−): 53.8%
Residual bone height > 2.5 mm: 55.1% 2.15 0.28
≥ 2.5 mm: 36.3%
Septa +: 25.0% 3.39 0.29
−: 52.8%
Nasal division +: 25.0% 4.64 0.038*
−: 60.7%
  1. *p < 0.05; **p < 0.01