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Egyptian Journal of Forensic Sciences

Table 2 Intraclass Correlation Coefficient for chronological age and Foti models in group I (n = 1000)

From: Reliability of mathematical regression models for age estimation in the mixed dentition stage for Egyptian children

 

ICC coefficient

95% C.I

P

Overall (n = 1000)

 

LL UL

 

  Chronological age vs. Foti 1

0.619

0.580 – 0.656

 < 0.001*

  Chronological age vs. Foti 2

0.663

0.627 – 0.697

 < 0.001*

  Chronological age vs. Foti 3

0.710

0.678 – 0.740

 < 0.001*

Age group

 Group 6—< 9 years (n = 513)

  Chronological age vs. Foti 1

0.127

0.041 – 0.211

0.002*

  Chronological age vs. Foti 2

0.276

0.194 – 0.354

 < 0.001*

  Chronological age vs. Foti 3

0.646

0.593 – 0.694

 < 0.001*

 Group ≥ 9—14 years (n = 487)

  Chronological age vs. Foti 1

0.408

0.332 – 0.480

 < 0.001*

  Chronological age vs. Foti 2

0.389

0.311 – 0.462

 < 0.001*

  Chronological age vs. Foti 3

0.445

0.371 – 0.513

 < 0.001*

Sex

Male overall (n = 484)

  Chronological age vs. Foti 1

0.619

0.561 – 0.671

 < 0.001*

  Chronological age vs. Foti 2

0.660

0.606 – 0.707

 < 0.001*

  Chronological age vs. Foti 3

0.701

0.652 – 0.743

 < 0.001*

 Group 6—< 9 years (n = 250)

  Chronological age vs. Foti 1

0.174

0.051 – 0.291

0.003*

  Chronological age vs. Foti 2

0.321

0.205 – 0.428

 < 0.001*

  Chronological age vs. Foti 3

0.653

0.575 – 0.719

 < 0.001*

 Group ≥ 9—14 years (n = 234)

  Chronological age vs. Foti 1

0.406

0.293 – 0.508

 < 0.001*

  Chronological age vs. Foti 2

0.389

0.274 – 0.492

 < 0.001*

  Chronological age vs. Foti 3

0.451

0.343 – 0.548

 < 0.001*

Female (n = 516)

  Chronological age vs. Foti 1

0.622

0.566 – 0.672

 < 0.001*

  Chronological age vs. Foti 2

0.669

0.619 – 0.714

 < 0.001*

  Chronological age vs. Foti 3

0.719

0.675 – 0.758

 < 0.001*

 Group 6—< 9 years (n = 263)

  Chronological age vs. Foti 1

0.086

-0.035 – 0.205

0.081

  Chronological age vs. Foti 2

0.235

0.117 – 0.346

 < 0.001*

  Chronological age vs. Foti 3

0.640

0.563 – 0.707

 < 0.001*

 Group ≥ 9—14 years (n = 253)

  Chronological age vs. Foti 1

0.417

0.309 – 0.513

 < 0.001*

  Chronological age vs. Foti 2

0.396

0.287 – 0.495

 < 0.001*

  Chronological age vs. Foti 3

0.441

0.336 – 0.535

 < 0.001*

  1. poor agreement < 0.50 moderate agreement 0.50—< 0.75
  2. good agreement 0.75—0.90 excellent agreement > 0.90
  3. CI Confidence interval, LL Lower limit, UL Upper Limit
  4. *Statistically significant at p ≤ 0.05
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