Table 4. Multilinear regression of total academic performance and myopia development in the Shenzhen cohort.

Grade at baseline	Grade at follow-up	N	β	P value
2	4	944	0.03	<0.001
3	5	467	0.04	0.001
4	6	26,315	0.01	<0.001
5	7	836	0.03	<0.001
6	8	584	0.04	<0.001