Table 3.

Prevalence of suspected scoliosis among students stratified by ethnicity and region.

Variable	Category	N	Suspected scoliosis screening positive	Positive rate %	p value
Ethnicity	Zang	32,231	747	2.32	0.167
	Han	14,187	361	2.54
	Hui	4,229	99	2.34
	Others	378	4	1.06
County	Zhuo Ni	9,186	107	1.17	<0.001
	Lin Tan	10,135	276	2.72
	Lu Qu	3,297	89	2.70
	Die Bu	2,975	108	3.63
	Zhou Qu	4,182	127	3.04
	Ma Qu	3,613	142	3.93
	Xia He	4,388	87	1.98
	He Zuo	13,249	275	2.08