Table 3. Comparison of the distribution of the 4 prevalent SLC25A13 mutations in the Guangdong and Shaanxi provinces.

Mutations	Guangdong (n=6,818)	Shaanxi (n=5,492)	χ 2	P value
I	54	13	17.328	0.000
III	3	5	–	0.480
X	9	2	–	0.126
XIX	2	9	–	0.015
Total	68	29	8.570	0.003

In this table, I, III, X and XIX represent the mutations c.852_855del, c.1638_1660dup, c.615+5G>A, and c.1751-5_1751-4ins(2684), respectively.