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Table 8 Correlation analysis of RID change with respect to Pederson’s difficulty index (DI)

From: Spontaneous bone regeneration after surgical extraction of a horizontally impacted mandibular third molar: a retrospective panoramic radiograph analysis

Assessments

Spearman’s rho

Correlations coefficient

Sig. (two-tailed)

RID6W_RID0

0.222

0.206

RID6M_RID6W

0.108

0.541

RID6M_RID0

0.395#

0.021

  1. Abbreviations: RID6W_RID0, difference between the radiographic infrabony defect recorded at 6 months and at baseline, RID6M_RID6W difference between the radiographic infrabony defect recorded at 6 months and at 6 weeks, RID6M_RID0 difference between the radiographic infrabony defect recorded at 6 months and at baseline
  2. #Correlation is significant at the 0.05 Position (2-tailed)
  3. #Note that the difference between RID value is in its absolute value for the statistical analysis