Evidence map›Paper›PMID 27255744›Full record

ArticleBMC psychology2016

Effect of household size on mental problems in children: results from the Norwegian Mother and Child Cohort study.

Bjørn Grinde, Kristian Tambs

Abstract read
In one paragraph

Article in BMC psychology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing 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

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

  1. Pooled it
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  10. Trends in Mental Wellbeing of US Children, 2019-2022: Erosion of Mental Health Continued in 2022.International journal of environmental research and public health · 2024
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  20. Psychological Effects and Associated Factors of COVID-19 in a Mexican Sample.Disaster medicine and public health preparedness · 2020
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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

2 authors.

Bjørn GrindeDivision of Mental Health, Norwegian Institute of Public Health, Postbox 4404, Nydalen, 0403, Oslo, Norway. bjgr@fhi.no.
Kristian TambsDivision of Mental Health, Norwegian Institute of Public Health, Postbox 4404, Nydalen, 0403, Oslo, Norway.

Funding

Gene-Environment Interactions in an Autism Birth CohortU01NS047537 · NINDS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI LIPKIN, W. IAN · 2003 to 2013
$27.0M
NIEHS NIH HHS N01 ES075558NINDS NIH HHS U01 NS047537
6 · The paper itself

Abstract

backgroundMost people in industrialized societies grow up in core (parents only) families with few if any siblings. Based on an evolutionary perspective, it may be argued that this environment reflects a mismatch, in that the tribal setting offered a larger number of close affiliates. The present project examined whether this mismatch may have a negative impact on mental health.

methodsWe used data from the Norwegian Mother and Child Cohort Study (MoBa), which includes 114 500 children. The mothers were recruited during pregnancy and followed up with questionnaires as the infants grew older. Correlates between number and type of people living in the household and questions probing mental health were corrected for likely confounders.

resultsThe number of household members correlated with scores on good mental health at all ages tested (3, 5 and 8 years). The effects were distinct, highly significant, and present regardless of how mental issues were scored. The outcome could be attributed to having older siblings, rather than adults beyond parents. The more siblings, and the closer in age, the more pronounced was the effect. Living with a single mother did not make any difference compared to two parents. Girls were slightly more responsive to the presence of siblings than boys. Household pets did not have any appreciable impact.

conclusionA large household is associated with fewer mental problems in children.

Indexed as

Family CharacteristicsAdultBiological EvolutionChildChild Behavior DisordersFemaleHumansMaleMental DisordersMental HealthMother-Child RelationsMothersNorwayProspective StudiesSiblingsSocial BehaviorBirth orderChildhoodEvolutionary perspectiveHousehold sizeMental problemsMoBaSiblingsSocial affiliations

Identifiers

PMID27255744
PMCPMC4890284

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.