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Table 2 Results of the degree of inter and intra observer agreement. All results with p < 0.05

From: Accuracy assessment of dental age estimation with the Willems, Demirjian and Nolla methods in Spanish children: Comparative cross-sectional study

Age groups Inter-examiner Intra-examiner
Demirjian Nolla Demirjian Nolla
4-6.9 0.94 0.94 0.94 0.95
7-7.9 0.91 0.92 0.92 0.93
8-8.9 0.92 0.93 0.93 0.94
9-10.9 0.95 0.97 0.99 0.99
11-13.9 0.98 0.99 0.99 0.99
Total 0.98 0.98 0.99 0.99