Background

Previous validity studies of the Alberta Infant Motor Scale (AIMS), using raw scores and percentile curves for group comparisons, showed that infants in Brazil achieved gross motor milestones at later ages. Validity of the AIMS norms were later reassessed using a logistic regression model that placed the AIMS items on an age scale.

Objectives

Our study examined the validity of the AIMS norms for Brazilian infants using the recommended method for calculating and comparing item locations.

Methods

Data from 732 Brazilian infants (2009–11), 3 days to 18 months old, were compared to the AIMS normative sample (n = 2202). Logistic regression placed the AIMS items of both samples on age scales representing the age at which 50% of infants passed an item and compared the two datasets. Pearson correlation coefficient tested the association across samples.

Results

47 of the 58 AIMS items met the criterion for stable regression to calculate item locations of the Brazilian dataset. Based on the age when 50% of the infants passed a criterion, most of the items from the Brazilian sample (n = 28) differed by two weeks or less compared to the Canadian normative sample.

Conclusion

The sequence and age for the emergence of AIMS items were similar between the Brazilian and Canadian samples. Canadian norms are appropriate for clinical decisions and research with Brazilian infants.

中文翻译：

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使用巴西样本的阿尔伯塔婴儿运动量表的跨国有效性

背景

先前对艾伯塔婴儿运动量表 (AIMS) 的有效性研究，使用原始分数和百分位曲线进行组比较，表明巴西的婴儿在较晚年龄实现了大运动里程碑。后来使用逻辑回归模型重新评估了 AIMS 规范的有效性，该模型将 AIMS 项目置于年龄范围内。

目标

我们的研究使用推荐的计算和比较物品位置的方法检查了巴西婴儿的 AIMS 规范的有效性。

方法

将 732 名 3 天至 18 个月大的巴西婴儿 (2009-11) 的数据与 AIMS 规范样本 (n  =  2202) 进行比较。Logistic 回归将两个样本的 AIMS 项目置于代表 50% 的婴儿通过项目的年龄的年龄量表上，并比较了两个数据集。Pearson 相关系数测试了样本之间的关联。

结果

58 个 AIMS 项目中有 47 个满足稳定回归的标准，以计算巴西数据集的项目位置。根据 50% 的婴儿通过标准时的年龄，巴西样本（n  =  28）中的大多数项目与加拿大规范样本相比相差两周或更短。

结论

巴西和加拿大样本之间 AIMS 项目出现的顺序和年龄相似。加拿大规范适用于巴西婴儿的临床决策和研究。