The impact of pictorial health warnings on purchases of sugary drinks for children: A randomized controlled trial.
Marissa G HallAnna H GrummonIsabella Carolyn Aida HigginsAllison J LazardCarmen E PrestemonMirian I Avendaño-GaldamezLindsey Smith TailliePublished in: PLoS medicine (2022)
The trial design, measures, power calculation, and analytic plan were registered before data collection at www.clinicaltrials.gov NCT04223687.