Table 20.

Results of the main automatic methods for age group classification, evaluated in different populations

Evaluation work	Population	n	Age	#Groups	Accuracy	Others
De Tobel et al. [56]	Belgian	400	–	10	51	Kappa= 82%
Merdietio et al. [57]	Belgian	400	–	10	61	Kappa= 84%
Banar et al. [58]	Belgian	400	7–24	10	60	Kappa= 82%
Kim et al. [59]	South Korean	1586	–	5	90
Kahaki et al. [60]	Malaysian	456	1–17	5	82