Table 2.

The incidence of MADE in the study participants.

Variables	MADE				All	χ2	P valuea
	No		Yes
	N	%	N	%	N
Age, years
≤ 10	1159	93.02	87	6.98	1246	43.738	< .001
11–20	3491	93.54	241	6.46	3732
21–30	394	87.36	57	12.64	451
31–40	778	89.02	96	10.98	874
≥ 41	556	89.39	66	10.61	622
Sex
Male	2979	93.18	218	6.82	3197	9.522	.002
Female	3399	91.17	329	8.83	3728
Schooling
Primary school	1758	93.07	131	6.93	1889	61.518	< .001
Middle school	2122	94.40	126	5.60	2248
High school	913	92.60	73	7.40	986
University or graduate	1585	87.96	217	12.04	1802