Evidence map›Paper›PMID 40790184›Full record

SynthesisBMC public health2025

Effect of intervention on screen time in preschoolers: a systematic review and meta-analysis of randomized controlled trials.

Yan Wu, Xiaobin Xi, Chunkai Zhang, Jieying Jiang, Sunyue Ye

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in BMC public health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. Review
  5. Article
  6. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Yan WuCollege of Education, Jiaxing University, Jiaxing, China.
Xiaobin XiCollege of Education, Jiaxing University, Jiaxing, China.
Chunkai ZhangCollege of Education, Jiaxing University, Jiaxing, China.
Jieying JiangCollege of Education, Jiaxing University, Jiaxing, China.
Sunyue YeCollege of Education, Jiaxing University, Jiaxing, China. syye@zjxu.edu.cn.

Funding

Major Humanities and Social Sciences Research Projects in Zhejiang higher education institutions 2023QN019Zhejiang Provincial Philosophy and Social Sciences Planning Research Project 25NDJC162YBMS
6 · The paper itself

Abstract

backgroundExcessive screen time (ST) is linked to adverse physical and mental development in children, with habits forming in preschool and solidifying over time. Previous studies on interventions to reduce ST in preschoolers aged 0-7 years have shown inconsistent results. We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) to evaluate intervention effectiveness and identify potential moderators. 

methodsWe searched CNKI (Chinese), Wanfang Data (Chinese), SinoMed, Ebscohost, Web of Science, EMBASE, PubMed, and Cochrane Library for RCTs (January 1, 2000-December 31, 2024) targeting ST reduction in preschool children. Study quality was assessed using the Cochrane Risk of Bias Assessment tool and Jadad scale. Effect size were reported as standardized mean difference (SMD) with 95% confidence intervals (CI). Subgroup analyses (e.g., sample size, child age, gender, intervention duration) were conducted, with statistical tests (e.g., the chi-square test) comparing subgroup differences.

resultsA total of 41 studies with 14,514 participants were included in the meta-analysis. The overall summary of random effects showed a small, beneficial impact of ST interventions compared to controls (SMD = 0.26, 95% CI: 0.12 to 0.39). Subgroup analysis showed that the intervention effect was moderated by child age (χ

conclusionDespite heterogeneity in study methods and results, overall interventions to reduce ST in early childhood show significant reductions, suggesting that this may be an opportune time to intervene. Future research should explore strategies for implementing large-scale interventions and sustaining long-term intervention effects, investigate the potential impact of different theoretical frameworks on intervention outcomes, and examine the role of caregivers in supporting behavior change. These findings provide a robust foundation for developing evidence-based strategies to promote healthy ST habits in young children.

Indexed as

Screen TimeChild, PreschoolFemaleHumansMaleRandomized Controlled Trials as TopicInterventionMeta-analysisPreschool childrenRandomized controlled trialsScreen time

Identifiers

PMID40790184
PMCPMC12337541

What OpenQuestion holds

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LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.