KOOS scales by age group.

Mean ± SD scores in the five scales and 95% CI by age groups. H is the Kruskal-Wallis statistic, approximatively distributed as χ2 (5). Bonferroni corrections for multiple comparisons were employed (statistical significant differences are found for p<0.01). KOOS scales by age group.不同年龄组在5个量表上的平均分±标准差（Standard Deviation，SD）及95%置信区间（Confidence Interval，CI）。检验统计量H为Kruskal-Wallis检验统计量，其近似服从自由度为5的卡方（χ²）分布。本研究采用Bonferroni校正法对多重比较进行校正，当p<0.01时判定存在统计学显著性差异。 按年龄组划分的KOOS量表得分情况。