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A Pilot Feasibility Randomized Controlled Trial of Effects of Opaque Bottles on Maternal Sensitivity, Infant Intake, and Infant Weight Status
Ventura, Alison K. Phelan, Suzanne Alarcon, Noemi Diaz, Adilene Quintana Sklar, Jeffrey C. Hart, Chantelle N.
Ventura, Alison K.
Phelan, Suzanne
Alarcon, Noemi
Diaz, Adilene Quintana
Sklar, Jeffrey C.
Hart, Chantelle N.
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Journal article
Date
2024-02-05
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Committee member
Department
Social and Behavioral Sciences
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DOI
https://doi.org/10.1016/j.jand.2024.02.005
Abstract
Background
Conventional clear infant feeding bottles provide visual cues about the amount of milk consumed, which may decrease caregivers’ sensitivity to infant cues, increase infant intake, and lead to greater infant weight gain.
Objective
This study examined feasibility, adherence, acceptability, and preliminary effectiveness of an intervention in which families received clear vs opaque bottles.
Design
A pilot feasibility randomized controlled trial was conducted.
Participants/Setting
Participants included mothers (N = 76) with young infants (2.9 ± 1.4 months old). Data collection occurred between December 2018 and July 2022 and within San Luis Obispo and Santa Barbara Counties, California. All assessments occurred within participants’ homes.
Intervention
Participants were randomized to use clear (Clear group, n = 38) or opaque (Opaque group, n = 38) bottles for 12 weeks.
Main Outcome Measures
We assessed feasibility of recruitment and retention, participant perceptions of study bottles, participant adherence to the intervention, maternal sensitivity to cues, infant intake (mL and mL/kg), and infant weight-for-length z-scores (WLZ).
Statistical Analyses Performed
Data were analyzed using linear regression, χ2 analysis, and repeated-measures analysis of variance (ANOVA).
Results
Of 842 potential participants, 295 (35%) could not be reached after initial contact, 166 (20%) declined to participate, and 305 (36%) were ineligible. Of those who declined, 16 (10%) declined because they did not want to use study bottles. No differences were observed for loss to follow-up for Clear (8 of 38; 21%) vs Opaque (5 of 38; 13%) groups (P = 0.36) or for reported use of assigned bottles for Clear (89.8% ± 24.5% of daily feedings) vs Opaque (90.1% ± 22.1%) groups (P = 0.96). No group differences were observed for sensitivity to cues (P = 0.52) or intake (mL, P = 0.53 or mL/kg, P = 0.56) at follow-up. Opaque group infants had lower WLZ at follow-up compared with Clear group infants (mean difference, 0.47; 95% confidence interval, 0.08, 0.86; ηp2 = 0.17), adjusting for baseline WLZ.
Conclusions
Relative to providing clear bottles, providing families with opaque bottles appeared feasible and acceptable, with good adherence. Although preliminary, study findings suggest the potential of opaque bottles to support healthier weight outcomes for bottle-fed infants.
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Citation
Alison K. Ventura, Suzanne Phelan, Noemi Alarcon, Adilene Quintana Diaz, Jeffrey C. Sklar, Chantelle N. Hart, A Pilot Feasibility Randomized Controlled Trial of Effects of Opaque Bottles on Maternal Sensitivity, Infant Intake, and Infant Weight Status, Journal of the Academy of Nutrition and Dietetics, Volume 124, Issue 9, 2024, Pages 1149-1161.e1, ISSN 2212-2672, https://doi.org/10.1016/j.jand.2024.02.005. (https://www.sciencedirect.com/science/article/pii/S2212267224000558)
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Elsevier
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Journal of the Academy of Nutrition and Dietetics, Vol. 124, Iss. 9
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