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Validation and human factor analysis study of an infant weight estimation device.
BMC Pediatrics ( IF 2.0 ) Pub Date : 2020-01-22 , DOI: 10.1186/s12887-020-1933-5
Susan M Abdel-Rahman 1, 2 , Ian M Paul 3 , Paula Delmore 4 , Jia-Yuh Chen 5 , Mary Mills 6 , Rachel G Greenberg 6 ,
Affiliation  

BACKGROUND Weight is critical for the medical management of infants; however, scales can be unavailable or inaccessible in some practice settings. We recently developed and validated a robust infant weight estimation method based on chest circumference (CC) and head circumference (HC). This study was designed to determine the human factors (HF) experience with, and predictive performance of, an infant weight estimation device that implements this method. METHODS Prospective, multi-center, observational, masked study of 486 preterm and term infants (0-90 days) assessed by 15 raters. Raters measured the infant using calibrated scales/measures and masked versions of the device. Raters also evaluated critical tasks associated with device use. Mean error (ME) and mean percentage error (MPE) were used to assess predictive performance. RESULT Among 486 infants enrolled (36.8 ± 4.0 weeks gestational age, 31.5 ± 28.6 days postnatal age), predicted weight correlated highly with actual weight (r = 0.97, ME: - 69 ± 257 g, MPE: - 1.3 ± 6.9%). Predicted weight was within 10 and 15% of actual weight in 86 and 99%, of infants. HF errors were low, 0.1-0.8% depending on task. In all cases raters were confident or very confident in their measurements. CONCLUSION The device was statistically equivalent to the method on which it was based and approximated weight with acceptable variance from the true weight. HF data suggest the device is easy to use. This device can be used to estimate weight in infants when calibrated scales are impractical or unavailable.

中文翻译:

婴儿体重估计装置的验证和人为因素分析研究。

背景技术体重对于婴儿的医疗管理至关重要。但是,在某些练习设置中,秤可能不可用或无法访问。我们最近开发并验证了基于胸围(CC)和头围(HC)的可靠的婴儿体重估算方法。这项研究旨在确定实施此方法的婴儿体重估算设备的人为因素(HF)体验以及其预测性能。方法采用15位评估者对486例早产和足月婴儿(0-90天)进行的前瞻性,多中心,观察性掩盖研究。评分者使用已校准的标尺/测量值和蒙版设备对婴儿进行了测量。评分者还评估了与设备使用相关的关键任务。平均误差(ME)和平均百分比误差(MPE)用于评估预测性能。结果在486名婴儿中(胎龄36.8±4.0周,出生后31.5±28.6天),预测体重与实际体重高度相关(r = 0.97,ME:-69±257 g,MPE:-1.3±6.9%)。在86%和99%的婴儿中,预计体重在实际体重的10%和15%之间。HF错误较低,取决于任务,其误差为0.1-0.8%。在所有情况下,评估者对他们的测量都充满信心或非常有信心。结论该装置在统计学上等同于其所基于的方法,并且近似于重量,并且与真实重量具有可接受的差异。HF数据表明该设备易于使用。当校准秤不可行或无法使用时,该设备可用于估计婴儿的体重。预测重量与实际重量高度相关(r = 0.97,ME:-69±257 g,MPE:-1.3±6.9%)。在86%和99%的婴儿中,预计体重在实际体重的10%和15%之间。HF错误较低,取决于任务,其误差为0.1-0.8%。在所有情况下,评估者对他们的测量都充满信心或非常有信心。结论该装置在统计学上等同于其所基于的方法,并且近似于重量,并且与真实重量具有可接受的差异。HF数据表明该设备易于使用。当校准秤不可行或无法使用时,该设备可用于估计婴儿的体重。预测重量与实际重量高度相关(r = 0.97,ME:-69±257 g,MPE:-1.3±6.9%)。在86%和99%的婴儿中,预计体重在实际体重的10%和15%之间。HF错误较低,取决于任务,其误差为0.1-0.8%。在所有情况下,评估者对他们的测量都充满信心或非常有信心。结论该装置在统计学上等同于其所基于的方法,并且近似于重量,并且与真实重量具有可接受的差异。HF数据表明该设备易于使用。当校准秤不可行或无法使用时,该设备可用于估计婴儿的体重。在所有情况下,评估者对他们的测量都充满信心或非常有信心。结论该装置在统计学上等同于其所基于的方法,并且在与真实重量相差不大的情况下近似了重量。HF数据表明该设备易于使用。当校准秤不可行或无法使用时,该设备可用于估计婴儿的体重。在所有情况下,评估者对他们的测量都充满信心或非常有信心。结论该装置在统计学上等同于其所基于的方法,并且近似于重量,并且与真实重量具有可接受的差异。HF数据表明该设备易于使用。当校准秤不可行或无法使用时,该设备可用于估计婴儿的体重。
更新日期:2020-01-23
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