Longitudinal performance on the Ruff Figural Fluency Test per age group.

Abbreviations: RFFT, Ruff Figural Fluency Test; SD, standard deviation; IQR, interquartile range.a Trends across consecutive measurements and age groups were analyzed by ANOVA for the number of unique designs and by Kruskal-Wallis H test for the number of perseverative errors.bp value for trend across age groups is c Trend across age groups is not statistically significant.Longitudinal performance on the Ruff Figural Fluency Test per age group.缩写说明：RFFT（Ruff Figural Fluency Test，雷夫图形流畅性测验）；SD（standard deviation，标准差）；IQR（interquartile range，四分位距）。 a. 针对独特设计数量，采用方差分析（ANOVA）分析连续测量值与年龄分组间的趋势；针对持续性错误数量，则采用克鲁斯卡尔-沃利斯H检验（Kruskal-Wallis H test）进行分析。 b. 年龄组间趋势的p值为；c. 年龄组间趋势无统计学显著性。 不同年龄组的雷夫图形流畅性测验纵向表现。