Finally, the rules utilized by Chinese children are discussed and compared to foreign researcher's findings. The advantages and shortcomings of latent class analysis are also discussed.
在讨论部分，从理论上对中国儿童使用规则的类型进行分析，并且与外国学者的研究进行对比，同时对潜类别分析这种方法的优缺点也进行了总结。
Latent Class Analysis (LCA) was used to cluster the subjects according to their LBP symptoms.
根据他们的腰痛症状用潜在类分析(LCA)将对象分群。
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