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Table 2 Regression analysis for validation of the estimated age

From: Age estimation with cemental incremental lines in normal and periodontally diseased teeth using phase contrast microscope: an original research

Group Variables B Standard error t Stat P value Lower 95% Upper 95% R square Std error F value Sig
Group 1 Intercept 0.79 1.51 0.52 0.61 − 2.30 3.88 0.922 1.685 335.12 <0.001**
Actual age 0.94 0.05 18.31 0.00 0.83 1.04
Group 2 Intercept 1.54 1.51 1.02 0.31 − 1.55 4.64 0.961 1.702 691.91 <0.001**
actual age 0.99 0.04 26.30 0.00 0.91 1.06
  1. **Statistically highly significant (p<0.01)