Concordia University, Montreal, Quebec, Canada.
J Speech Lang Hear Res. 2012 Apr;55(2):421-34. doi: 10.1044/1092-4388(2011/10-0273). Epub 2012 Jan 5.
To examine the predictive validity of the Language Use Inventory (LUI), a parent report of language use by children 18-47 months old (O'Neill, 2009).
348 children whose parents had completed the LUI were reassessed at 5-6 years old with standardized, norm-referenced language measures and parent report of developmental history. The relationship between scores on the LUI and later measures was examined through correlation, binary classification, and receiver operating characteristic curve analysis.
For children aged 24-47 months at the time of LUI completion, LUI scores correlated significantly with language measure scores. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were also calculated for 4 cutoff scores on the LUI, including -1.64 SD, a score that maximized sensitivity to 81% and specificity to 93%. For children aged 18-23 months at the time of LUI completion, specificity and NPV were high, but sensitivity and PPV were lower than desirable.
The results provide initial support for the LUI's predictive validity, particularly for children 24-47 months, and suggest the LUI can serve as an indicator of later language outcomes in referred populations. The results compare favorably to findings for other early child-language measures.
检验语言使用量表（LUI）的预测效度，该量表是对 18-47 个月大儿童语言使用情况的家长报告（O'Neill，2009）。
348 名儿童的父母完成了 LUI，在 5-6 岁时使用标准化的、基于常模的语言测量工具和家长对发育史的报告进行了重新评估。通过相关性、二元分类和接收者操作特征曲线分析，研究了 LUI 得分与后期测量值之间的关系。
对于在完成 LUI 时年龄为 24-47 个月的儿童，LUI 得分与语言测量得分显著相关。还为 LUI 上的 4 个截距分数计算了灵敏度、特异性、阳性预测值（PPV）和阴性预测值（NPV），包括-1.64SD，该分数使灵敏度最大达到 81%，特异性最大达到 93%。对于在完成 LUI 时年龄为 18-23 个月的儿童，特异性和 NPV 较高，但灵敏度和 PPV 低于理想值。
结果初步支持 LUI 的预测效度，特别是对于 24-47 个月大的儿童，并表明 LUI 可以作为参考人群中后续语言结果的指标。结果与其他早期儿童语言测量方法的发现相当。
