The prevalence rate of dyslexia in different gradesa.
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aThere was significant differences between 3rd and 6th grades (P = 0.049), 4th and 6th grades (P = 0.007), 5th and 6th grades (P = 0.027) in prevalence rates separately and no significant differences between 3rd and 4th grades (P = 0.544), 3rd and 5th grades (P = 0.914), 4th and 5th grades (P = 0.588).
创建时间：
2015-12-02
