Table 2. Age and gender distribution of training and validation datasets for each model and internal testing dataset.

-	-	-	Age groups (years)
-	Gender	Split	0–3	3–6	6–9	9–12	12–15	15–18
Bağcılar model	Female	Train	64	184	363	462	165	131
		Val	9	19	46	52	18	13
	Male	Train	97	139	143	227	168	68
		Val	8	18	9	26	20	8
Public model	Female	Train	273	716	2,242	3,344	1,477	201
		Val	33	94	249	347	168	17
	Male	Train	251	945	1,265	1,807	3,445	669
		Val	27	91	146	208	387	82
Combined model	Female	Train	338	923	2,624	3,785	1,661	321
		Val	41	90	276	420	167	41
	Male	Train	346	1,065	1,395	2,030	3,615	743
		Val	37	128	168	238	405	84
Internal testing set	Female	Test	9	30	76	121	46	17
	Male	Test	21	37	36	57	71	25