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Incidence and prevalence of primary care antidepressant prescribing in children and young people in England, 1998-2017: A population-based cohort study

Jack, Ruth H.; Hollis, Chris; Coupland, Carol; Morriss, Richard; Knaggs, Roger David; Butler, Debbie; Cipriani, Andrea; Cortese, Samuele; Hippisley-Cox, Julia

Authors

RUTH JACK Ruth.Jack@nottingham.ac.uk
Senior Research Fellow

CHRIS HOLLIS chris.hollis@nottingham.ac.uk
Professor of Child and Adolescent Psychiatry

CAROL COUPLAND carol.coupland@nottingham.ac.uk
Professor of Medical Statistics

RICHARD MORRISS richard.morriss@nottingham.ac.uk
Professor of Psychiatry & Community Mental Health

Debbie Butler

Andrea Cipriani

Samuele Cortese

Julia Hippisley-Cox



Contributors

Clara Hellner
Editor

Abstract

BACKGROUND: The use of antidepressants in children and adolescents remains controversial. We examined trends over time and variation in antidepressant prescribing in children and young people in England and whether the drugs prescribed reflected UK licensing and guidelines. METHODS AND FINDINGS: QResearch is a primary care database containing anonymised healthcare records of over 32 million patients from more than 1,500 general practices across the UK. All eligible children and young people aged 5-17 years in 1998-2017 from QResearch were included. Incidence and prevalence rates of antidepressant prescriptions in each year were calculated overall, for 4 antidepressant classes (selective serotonin reuptake inhibitors [SSRIs], tricyclic and related antidepressants [TCAs], serotonin and norepinephrine reuptake inhibitors [SNRIs], and other antidepressants), and for individual drugs. Adjusted trends over time and differences by social deprivation, region, and ethnicity were examined using Poisson regression, taking clustering within general practitioner (GP) practices into account using multilevel modelling. Of the 4.3 million children and young people in the cohort, 49,434 (1.1%) were prescribed antidepressants for the first time during 20 million years of follow-up. Males made up 52.0% of the cohorts, but only 34.1% of those who were first prescribed an antidepressant in the study period. The largest proportion of the cohort was from London (24.4%), and whilst ethnicity information was missing for 39.5% of the cohort, of those with known ethnicity, 75.3% were White. Overall, SSRIs (62.6%) were the most commonly prescribed first antidepressant, followed by TCAs (35.7%). Incident antidepressant prescribing decreased in 5- to 11-year-olds from a peak of 0.9 in females and 1.6 in males in 1999 to less than 0.2 per 1,000 for both sexes in 2017, but incidence rates more than doubled in 12- to 17-year-olds between 2005 and 2017 to 9.7 (females) and 4.2 (males) per 1,000 person-years. The lowest prescription incidence rates were in London, and the highest were in the South East of England (excluding London) for all sex and age groups. Those living in more deprived areas were more likely to be prescribed antidepressants after adjusting for region. The strongest trend was seen in 12- to 17-year-old females (adjusted incidence rate ratio [aIRR] 1.12, 95% confidence interval [95% CI] 1.11-1.13, p < 0.001, per deprivation quintile increase). Prescribing rates were highest in White and lowest in Black adolescents (aIRR 0.32, 95% CI 0.29-0.36, p < 0.001 [females]; aIRR 0.32, 95% CI 0.27-0.38, p < 0.001 [males]). The 5 most commonly prescribed antidepressants were either licensed in the UK for use in children and young people (CYP) or included in national guidelines. Limitations of the study are that, because we did not have access to secondary care prescribing information, we may be underestimating the prevalence and misidentifying the first antidepressant prescription. We could not assess whether antidepressants were dispensed or taken. CONCLUSIONS: Our analysis provides evidence of a continuing rise of antidepressant prescribing in adolescents aged 12-17 years since 2005, driven by SSRI prescriptions, but a decrease in children aged 5-11 years. The variation in prescribing by deprivation, region, and ethnicity could represent inequities. Future research should examine whether prescribing trends and variation are due to true differences in need and risk factors, access to diagnosis or treatment, prescribing behaviour, or young people's help-seeking behaviour.

Citation

Hippisley-Cox, J., Jack, R. H., Hollis, C., Coupland, C., Morriss, R., Knaggs, R. D., …Hippisley, J. (2020). Incidence and prevalence of primary care antidepressant prescribing in children and young people in England, 1998-2017: A population-based cohort study. PLoS Medicine, 17(7), https://doi.org/10.1371/journal.pmed.1003215

Journal Article Type Article
Acceptance Date Jun 23, 2020
Online Publication Date Jul 22, 2020
Publication Date Jul 1, 2020
Deposit Date Jul 8, 2020
Publicly Available Date Jul 8, 2020
Journal PLoS medicine
Print ISSN 1549-1277
Electronic ISSN 1549-1676
Publisher Public Library of Science
Peer Reviewed Peer Reviewed
Volume 17
Issue 7
Article Number e1003215
DOI https://doi.org/10.1371/journal.pmed.1003215
Keywords General Medicine
Public URL https://nottingham-repository.worktribe.com/output/4756054
Publisher URL https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1003215

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/





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