Evidence map›Paper›PMID 34187418›Full record

ArticleBMC psychiatry2021

Gender differences in the use of atypical antipsychotics in early-onset schizophrenia: a nationwide population-based study in Brazil.

Izabela Fulone, Marcus Tolentino Silva, Luciane Cruz Lopes

Open access · goldAbstract read
In one paragraph

Article in BMC psychiatry, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 22% of its field
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

5 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. Pooled it
  2. Childhood-Onset Psychosis: A large UK case series.European child & adolescent psychiatry · 2026
    Article
  3. Article
  4. Article
  5. 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

3 authors at 1 institution in 1 country.

Izabela FulonePharmaceutical Sciences Graduate Course, University of Sorocaba, UNISO, Sorocaba/State of São Paulo, Brazil.
Marcus Tolentino SilvaPharmaceutical Sciences Graduate Course, University of Sorocaba, UNISO, Sorocaba/State of São Paulo, Brazil.
Luciane Cruz LopesPharmaceutical Sciences Graduate Course, University of Sorocaba, UNISO, Sorocaba/State of São Paulo, Brazil. luslopesbr@gmail.com.ORCID 0000-0002-3684-3275
Universidade de Sorocaba · BR

Funding

Fundação de Amparo à Pesquisa do Estado de São Paulo 2017/20668-7
6 · The paper itself

Abstract

backgroundThe use of atypical antipsychotics for the treatment of schizophrenia and other mental disorders in populations under 18 years of age is increasing worldwide. Little is known about treatment patterns and the influence of gender differences, which may be a predictor of clinical outcomes. The aim of this study was to investigate gender differences in the use of atypical antipsychotics in patients with early-onset schizophrenia (EOS) assisted by the public health system in Brazil.

methodsWe conducted a cross-sectional study of outpatients with EOS aged 10 to 17 years who received at least one provision of atypical antipsychotics (clozapine, olanzapine, risperidone, quetiapine or ziprasidone) from a large Brazilian pharmaceutical assistance programme. Data were retrieved from a nationwide administrative database from 2008 to 2017.

resultsOf the 49,943 patients with EOS, 63.5% were males, and the mean age was 13.6 years old. The patients were using risperidone (62.5%), olanzapine (19.6%), quetiapine (12.4%), ziprasidone (3.3%) and clozapine (2.2%). We found gender differences, especially in the 13-17 year age group (65.1% for males vs. 34.9% for females, p < 0.001), in the use of risperidone (72.1% for males vs. 27.9% for females, p < 0.001) and olanzapine (66.5% for males vs. 33.5% for females, p < 0.001). Only in the 13 to 17 years age group were the prescribed doses of olanzapine (p = 0.012) and quetiapine (p = 0.041) slightly higher for males than for females.

conclusionsOur findings showed gender differences among patients diagnosed with EOS and who received atypical antipsychotics. More attention should be devoted to gender differences in research and clinical practice.

Indexed as

Antipsychotic AgentsSchizophreniaAdolescentBenzodiazepinesBrazilCross-Sectional StudiesFemaleHumansMaleQuetiapine FumarateSex FactorsAntipsychotic AgentsBenzodiazepinesQuetiapine FumarateAdolescentAntipsychotic agentsChildGender differenceSchizophrenia

Identifiers

PMID34187418
PMCPMC8243572
OpenAlexW3176014295

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.