Use and reporting of Bland-Altman analyses in studies of self-reported versus measured weight and height.,International Journal of Obesity

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Use and reporting of Bland-Altman analyses in studies of self-reported versus measured weight and height.
International Journal of Obesity ( IF 4.2 ) Pub Date : 2019-12-02 , DOI: 10.1038/s41366-019-0499-5
Katherine M Flegal ₁ , Barry Graubard ₂ , John P A Ioannidis _{1,

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Affiliation

Background/Objectives

Bland–Altman methods for assessing the agreement between two measures are highly cited. However, these methods may often not be used to assess agreement, and when used, they are not always presented or interpreted correctly. Our objective was to evaluate the use and the quality of reporting of Bland–Altman analyses in studies that compare self-reported with measured weight and height.

Methods

We evaluated the use of Bland–Altman methods in 394 published articles that compared self-reported and measured weight and height data for adolescents or adults. Six reporting criteria were developed: assessment of the normality of the distribution of differences, a complete and correctly labeled Bland–Altman plot displaying the mean difference and limits of agreement (LOA), numerical values and confidence intervals, standard errors, or standard deviations for mean difference, numerical values of LOA, confidence intervals for LOA, and prespecified criteria for acceptable LOA.

Results

Only 72/394 (18%) studies comparing self-reported with measured weight and height or BMI used some form of Bland–Altman analyses. No study using Bland–Altman analyses satisfied more than four of the six criteria. Of the 72 studies, 64 gave mean differences along with confidence intervals or standard deviations, 55 provided complete Bland–Altman plots that were appropriately labeled and described, 37 provided numerical values for LOA, 4 reported that they examined the normality of the distribution of differences, 3 provided confidence intervals for LOA, and 3 had prespecified criteria for agreement.

Conclusions

Bland–Altman methods appear to be infrequently used in studies comparing measured with self-reported weight, height, or BMI, and key information is missing in many of those that do use Bland–Altman methods. Future directions would be defining acceptable LOA values and improving the reporting and application of Bland–Altman methods in studies of self-reported anthropometry.

中文翻译：

在自我报告与测量体重和身高的研究中使用和报告 Bland-Altman 分析。

背景/目标

用于评估两种措施之间一致性的 Bland-Altman 方法被广泛引用。然而，这些方法通常可能不用于评估一致性，并且在使用时，它们并不总是被正确地呈现或解释。我们的目标是评估 Bland-Altman 分析在将自我报告与测量的体重和身高进行比较的研究中的使用和报告质量。

方法

我们评估了 394 篇发表的文章中 Bland-Altman 方法的使用情况，这些文章比较了青少年或成人自我报告和测量的体重和身高数据。制定了六项报告标准：评估差异分布的正态性、完整且正确标记的 Bland-Altman 图，显示平均差异和一致性限 (LOA)、数值和置信区间、标准误差或标准偏差平均差、LOA 数值、LOA 置信区间以及可接受 LOA 的预先指定标准。

结果

只有 72/394 (18%) 将自我报告与测量的体重和身高或 BMI 进行比较的研究使用了某种形式的 Bland-Altman 分析。使用 Bland-Altman 分析的研究没有满足六个标准中的四个以上。在 72 项研究中，64 项给出了平均差以及置信区间或标准差，55 项提供了经过适当标记和描述的完整 Bland-Altman 图，37 项提供了 LOA 的数值，4 项报告说他们检查了差异分布的正态性，3 提供了 LOA 的置信区间，3 具有预先指定的一致性标准。