Table 1.

Socio-demographic characteristics of participants

	Community sample		Clinical sample		P value
	N	%	N	%
Total number	2301		429
Sex					0.001
Male	1051	51.3	258	60.1
Female	997	48.7	171	39.9
Missing	253	–	0	–
Age (Mean/SD)	9.7	0.4	10.4	3.8	< 0.001*
< 5	0	0	31	7.2
5–9	1569	77.1	174	40.6
10–14	467	22.9	154	35.9
15–19	0	0	70	16.3
Missing	265		0
Region					< 0.001
Ulaanbaatar	2301	100.0	344	84.5
Outside Ulaanbaatar	–		63	15.5
Missing	0		22	–
Family structure					< 0.001
Two-parent	1644	80.3	303	71.0
One-parent	278	13.6	104	24.4
No parent	126	6.2	20	4.7
Missing	253	–	2	–
Maternal education					< 0.001
Lower secondary and less	113	6.0	49	11.8
Upper secondary and more	1786	94.0	367	88.2
Missing	402	–	13	–
Household income					1.00
700,000 MNT and less**	708	34.9	149	35.1
700,001 MNT and more**	1319	65.1	276	64.9
Missing	274	–	4	–

* t-test was conducted for age of two samples

**MNT Mongolian Tugrik. 700,000 MNT was about 280 USD at the exchange rate in 2017–2019