Evidence map›Paper›PMID 35761176›Full record

SynthesisBMC primary care2022

Screen time increases overweight and obesity risk among adolescents: a systematic review and dose-response meta-analysis.

Purya Haghjoo, Goli Siri, Ensiye Soleimani, Mahdieh Abbasalizad Farhangi, Samira Alesaeidi

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in BMC primary care, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 87 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
87citing papers in PubMed, 8 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

87 citing papers in PubMed, 8 syntheses or guidelines pooled it.

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  5. Global research on 24-hour movement behaviours guidelines in children and adolescents: a systematic review.The international journal of behavioral nutrition and physical activity · 2025
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27 more citing papers are in PubMed but not listed here.

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.

Purya HaghjooUrology Research Center, Razi Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
Goli SiriDepartment of Internal Medicine, Amir Alam Hospital, Tehran University of Medical Sciences, Tehran, Iran.
Ensiye SoleimaniStudent Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran.
Mahdieh Abbasalizad FarhangiDepartment of Community Nutrition, Faculty of Nutrition, Tabriz University of Medical Sciences, Tabriz, Iran. abbasalizadm@tbzmed.ac.ir.
Samira AlesaeidiRheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAdolescence is a critical period in human life, associated with reduced physical activity and increased sedentary behaviors. In this systematic review and dose-response meta-analysis, we evaluated the association between screen time and risk of overweight/obesity among adolescents.

methodsA systematic search in electronic databases, including PubMed, Embase, and Scopus was performed up to September 2021. All published studies evaluating the association between screen time and risk of overweight/obesity among adolescents were retrieved. Finally, a total of 44 eligible studies were included in the meta-analysis.

resultsThe results of the two-class meta-analysis showed that adolescents at the highest category of screen time were 1.27 times more likely to develop overweight/obesity (OR = 1.273; 95% CI = 1.166-1.390; P < 0.001; I-squared (variation in ES attributable to heterogeneity) = 82.1%). The results of subgrouping showed that continent and setting were the possible sources of heterogeneity. Moreover, no evidence of non-linear association between increased screen time and risk of overweight/obesity among adolescents was observed (P-nonlinearity = 0.311).

conclusionFor the first time, the current systematic review and meta-analysis revealed a positive association between screen time and overweight/obesity among adolescents without any dose-response evidence.

trial registrationThe protocol of the current work has been registered in the PROSPERO system (Registration number: CRD42021233899 ).

Indexed as

OverweightScreen TimeAdolescentExerciseHumansObesityAdiposityDose-responseMeta-analysisObesityOverweightScreen time

Identifiers

PMID35761176
PMCPMC9238177

What OpenQuestion holds

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Registered trials

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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.