Main findings
SECONDARY
This study is the first of its kind to report real-world effectiveness of a parent-oriented mHealth intervention in 2.5-to-3-year-old children, delivered through primary child health care, with the overall aim to promote healthy lifestyle behaviors. An intervention effect was observed, with children in the intervention group having lower reported intakes of sweet and savory treats, sweet drinks, as well as less screen time at follow-up compared to the control group (primary outcomes). Additionally, parents in the intervention group also reported a higher PSE score for promoting healthy lifestyle behaviors at follow-up than the control group (secondary outcomes).