The Accuracy of a SmartBottle Device for Objective Assessment of Changes in Bottle Weight During Infant Feeding - 24/05/25
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Abstract |
Background |
Current infant feeding assessment methods are often labor-intensive for caregivers and subject to bias.
Objective |
This study assessed the accuracy of the SmartBottle device, which attaches to an infant feeding bottle and automatically records the amount consumed during bottle-feeding.
Design |
This was a proof-of-concept study wherein changes in bottle weight during infant feeding interactions were simulated and compared with criterion weights. Research assistants conducted 4 trials to obtain SmartBottle-derived test weights and corresponding scale-derived criterion weights for bottles of various sizes, shapes, and formula volumes. Each trial focused on a different bottle: (1) Dr. Brown's 120 mL, (2) Dr. Brown’s 250 mL, (3) Avent (Philips) 125 mL, and (4) Avent 260 mL. Twenty-five corresponding test and criterion weights were collected for each bottle, resulting in 100 measurements total.
Participants/setting |
Three research assistants collected data within a controlled laboratory setting.
Main outcome measures |
SmartBottle-derived test weights and scale-derived criterion weights were the main outcome measures.
Statistical analyses performed |
Two 1-sided t tests were used to compare the equivalence of SmartBottle-derived test weights to scale-derived criterion weights at ±5%, ±7.5%, and ±10% of scale-derived criterion weights. Bland-Altman plots were examined to assess whether there were systematic errors in SmartBottle-derived test weights.
Results |
The mean difference between SmartBottle-derived test weights and scale-derived criterion weights was –0.01 (90% CI –0.02 to 0.00) and was equivalent within ±5% bounds (P < .0001). Bland-Altman plots illustrated that there was no evidence of systematic bias related to bottle weight, size, or shape.
Conclusions |
SmartBottle-derived test weights were equivalent to scale-derived criterion weights within ±5% equivalence bounds with no evidence of bias. Further testing within real-world infant feeding contexts is warranted.
Le texte complet de cet article est disponible en PDF.Keywords : Bottle-feeding, Infant, Feeding, Diet assessment, Sensors, Feeding behavior
Plan
| STATEMENT OF POTENTIAL CONFLICT OF INTEREST No potential conflict of interest was reported by the authors. |
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| FUNDING/SUPPORT The project described was supported by the William and Linda Frost Fund in the Bailey College of Science and Mathematics, California Polytechnic State University. |
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| ACKNOWLEDGEMENTS The authors thank Bhagya Narayanan and Michael Noon for their assistance with data collection. |
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| AUTHOR CONTRIBUTIONS E. Blach and M. M. Ryder: Conceptualization, Investigation, Methodology, Visualization Writing – Original Draft Preparation, Writing – Reviewing and Editing. R. Brewster, J. de la Fuente, and B. G. Hawkins: Conceptualization, Methodology, Investigation, Resources, Software, Writing – Reviewing and Editing. A. K. Ventura: Conceptualization, Methodology, Investigation, Formal Analysis, Data Curation, Writing – Original Draft Preparation, Writing – Reviewing and Editing, Visualization, Supervision, Project Administration, Funding Acquisition. All authors reviewed and commented on subsequent drafts of the manuscript. |
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