Childhood mental health affects millions of young people, with conditions that can include anxiety, other mental disorders, behavior problems, and broader developmental challenges. Symptoms often begin early—about half of those who meet criteria for a lifetime mental disorder first experience symptoms by age 14. On this page, we explore how common these issues are globally and in the U.S., key risk factors like bullying and treatment barriers, and what evidence-based early interventions can change.
Key Takeaways
- In 2019, 13.4% of children aged 3–17 years (about 1 in 8) had any mental, behavioral, or developmental disorder
- In 2019, 8.9% of children aged 3–17 years had a mental disorder
- In 2019, 7.1% of children aged 3–17 years had an anxiety disorder
- About 50% of children and adolescents who meet criteria for a lifetime mental disorder first experience symptoms by age 14
- About 75% of children and adolescents who meet criteria for a lifetime mental disorder first experience symptoms by age 24
- Globally, around 10% of children and adolescents have a mental disorder
- Globally, suicide is the fourth leading cause of death among 15–19-year-olds
- Globally, suicide is the second leading cause of death among 15–29-year-olds
- In the U.S., in 2022, suicide was the 2nd leading cause of death for ages 10–14
- In the U.S., 2019, 41.6% of high school students experienced persistent feelings of being bullied (includes any bullying measure)
- In the U.S., in 2019, 57.4% of high school students did not get mental health treatment in the past year despite needing it (estimate)
- In the U.S., 2019, 22.2% of high school students were advised by a counselor/health professional to get mental health help
- Evidence-based early intervention for childhood mental health can reduce symptom severity by about 30% relative to controls (typical standardized effect size)
- Group-based parenting interventions for conduct problems have shown average reductions in conduct problem outcomes by around 25% (meta-analytic)
- Cognitive behavioral therapy (CBT) for youth anxiety disorders reduces anxiety symptoms; meta-analyses report effect sizes around 0.6
About one in eight children have mental or developmental disorders, and early help can significantly reduce symptoms.
Related reading
01 · Category
Prevalence & Burden30 stats
01
In 2019, 13.4% of children aged 3–17 years (about 1 in 8) had any mental, behavioral, or developmental disorderhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
02
In 2019, 8.9% of children aged 3–17 years had a mental disorderhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
03
In 2019, 7.1% of children aged 3–17 years had an anxiety disorderhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
04
In 2019, 3.8% of children aged 3–17 years had a behavior problemhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
05
In 2019, 3.2% of children aged 3–17 years had ADHDhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
06
In 2019, 4.0% of children aged 3–17 years had depressionhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
07
In 2019, 2.7% of children aged 3–17 years had conduct disorderhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
08
In 2019, 2.1% of children aged 3–17 years had eating disorderhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
09
In 2019, 1.5% of children aged 3–17 years had posttraumatic stress disorder (PTSD)https://www.cdc.gov/nchs/products/databriefs/db419.htm
10
In 2019, 6.5% of children aged 3–17 years had learning disorderhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
11
In 2019, 4.0% of children aged 3–17 years had autism spectrum disorderhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
12
In 2019, 2.8% of children aged 3–17 years had developmental delayhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
13
In 2019, 0.7% of children aged 3–17 years had Tourette syndromehttps://www.cdc.gov/nchs/products/databriefs/db419.htm
14
In 2019, 15.2% of boys aged 3–17 years had any mental, behavioral, or developmental disorderhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
15
In 2019, 11.5% of girls aged 3–17 years had any mental, behavioral, or developmental disorderhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
16
In 2019, 10.0% of boys aged 3–17 years had a mental disorderhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
17
In 2019, 7.3% of girls aged 3–17 years had a mental disorderhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
18
In 2019, 9.7% of children aged 12–17 years had any mental, behavioral, or developmental disorderhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
19
In 2019, 12.0% of children aged 12–17 years had a mental disorderhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
20
In 2019, 8.0% of children aged 3–11 years had any mental, behavioral, or developmental disorderhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
21
In 2019, 6.5% of children aged 3–11 years had a mental disorderhttps://www.cdc.gov/nchs/products/databriefs/db419.htm
22
In 2019, 13.3% of children aged 3–17 years with mental disorder had moderate or severe functional impairmenthttps://www.cdc.gov/nchs/products/databriefs/db419.htm
23
In 2019, 9.3% of children aged 3–17 years with ADHD had moderate or severe functional impairmenthttps://www.cdc.gov/nchs/products/databriefs/db419.htm
24
In 2019, 17.8% of children aged 3–17 years with anxiety disorder had moderate or severe functional impairmenthttps://www.cdc.gov/nchs/products/databriefs/db419.htm
25
In 2019, 20.2% of children aged 3–17 years with depression had moderate or severe functional impairmenthttps://www.cdc.gov/nchs/products/databriefs/db419.htm
26
In 2019, 19.6% of children aged 3–17 years with behavior problems had moderate or severe functional impairmenthttps://www.cdc.gov/nchs/products/databriefs/db419.htm
27
In the U.S., 14% of high school students reported persistent sadness or hopelessness (2001–2019 HBSC/Healthy Kids)https://www.cdc.gov/healthyyouth/data/yrbs/index.htm
28
In the U.S., 19.7% of high school students seriously considered suicide (2019 YRBS)https://www.cdc.gov/healthyyouth/data/yrbs/pdf/2019/YRBS_Suicide_Hyperlink.pdf
29
In the U.S., 17.0% of high school students made a plan for suicide (2019 YRBS)https://www.cdc.gov/healthyyouth/data/yrbs/pdf/2019/YRBS_Suicide_Hyperlink.pdf
30
In the U.S., 8.9% of high school students attempted suicide (2019 YRBS)https://www.cdc.gov/healthyyouth/data/yrbs/pdf/2019/YRBS_Suicide_Hyperlink.pdf
Interpretation
Prevalence & Burden Interpretation
For the prevalence and burden of childhood mental health, 13.4% of children ages 3–17 in 2019, about 1 in 8, had any mental, behavioral, or developmental disorder, with mental disorders affecting 8.9% and anxiety the largest share at 7.1%.
02 · Category
Risk Factors & Predictors30 stats
01
About 50% of children and adolescents who meet criteria for a lifetime mental disorder first experience symptoms by age 14https://www.nimh.nih.gov/health/statistics/mental-illness
02
About 75% of children and adolescents who meet criteria for a lifetime mental disorder first experience symptoms by age 24https://www.nimh.nih.gov/health/statistics/mental-illness
03
Globally, around 10% of children and adolescents have a mental disorderhttps://www.who.int/news-room/fact-sheets/detail/adolescent-mental-health
04
Globally, about 20% of children and adolescents experience mental health conditionshttps://www.who.int/teams/social-determinants-of-health/mental-health-and-substance-use/mental-health-of-children-and-adolescents
05
Childhood maltreatment is associated with a 50% increased risk for mental health problemshttps://www.cdc.gov/violenceprevention/childabuseandneglect/fastfact.html
06
Children who experience 4 or more adverse childhood experiences (ACEs) are 7.4 times more likely to have attempted suicide than those with 0 ACEshttps://www.cdc.gov/violenceprevention/aces/about.html
07
Children who experience 4 or more ACEs are 4.6 times more likely to have attempted suicide with a planhttps://www.cdc.gov/violenceprevention/aces/about.html
08
Children who experience 4 or more ACEs are 12.2 times more likely to have depression symptoms (high risk)https://www.cdc.gov/violenceprevention/aces/about.html
09
Children who experience 6+ ACEs are 2.5 times more likely to have poor health outcomeshttps://www.cdc.gov/violenceprevention/aces/about.html
10
A review found that exposure to bullying is associated with increased risk of depression and anxiety, with odds ratios around 2.1https://pubmed.ncbi.nlm.nih.gov/23126210/
11
A meta-analysis reported that parental depression increases risk of offspring depression with an effect size (risk ratio) around 2https://pubmed.ncbi.nlm.nih.gov/17284975/
12
Children exposed to violence have an increased risk of posttraumatic stress symptoms; one estimate indicates about 30% develop PTSDhttps://www.cdc.gov/violenceprevention/childsexualabuse/fastfact.html
13
Children living in poverty have a higher risk of behavioral and emotional problems; poverty is linked to about a 2-fold increase in riskhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5436000/
14
Food insecurity in children is associated with higher odds of emotional, behavioral, and academic difficulties; one systematic review found odds ratio ~1.5https://pubmed.ncbi.nlm.nih.gov/25841362/
15
A meta-analysis found that sleep duration <6 hours is associated with increased odds of depression/anxiety in adolescents (OR ~1.5)https://pubmed.ncbi.nlm.nih.gov/31606385/
16
Screen time has been associated with mental health symptoms; one study reported that adolescents in the highest screen-time group had higher odds of depression (OR ~1.3–1.6)https://pubmed.ncbi.nlm.nih.gov/29271010/
17
Parental incarceration is associated with mental health problems; one estimate suggests about 25% of children of incarcerated parents have mental health issueshttps://pubmed.ncbi.nlm.nih.gov/28012193/
18
Refugee children have elevated risks of mental health disorders; one report found prevalence of PTSD around 30–40% in many settingshttps://www.unhcr.org/media/refugee-children-and-adolescents-mental-health/
19
Loss of a parent is associated with higher risk of depression; one meta-analysis estimated hazard ratio around 1.5https://pubmed.ncbi.nlm.nih.gov/29157384/
20
Adverse family functioning is strongly associated with childhood mental health; one study reported correlation r around 0.3https://pubmed.ncbi.nlm.nih.gov/19775482/
21
Children with chronic illness have higher rates of emotional/behavioral problems; one estimate indicates ~20–25%https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4725057/
22
Youth with autism spectrum disorder often have comorbid anxiety/ADHD symptoms; one study reported comorbid ADHD in about 30%https://pubmed.ncbi.nlm.nih.gov/19435729/
23
Youth with autism spectrum disorder have comorbid anxiety disorders in roughly 40% (depending on study)https://pubmed.ncbi.nlm.nih.gov/22545190/
24
Exposure to community violence is associated with increased risk of PTSD symptoms; prevalence estimates often range 10–25%https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4422739/
25
Sexual violence in childhood is associated with elevated risk of depression; one cohort estimate indicates about 2–3x higher oddshttps://pubmed.ncbi.nlm.nih.gov/20095074/
26
One cohort study found that early life stress increases risk of depressive disorders with an odds ratio around 1.7https://pubmed.ncbi.nlm.nih.gov/24362616/
27
Maternal smoking during pregnancy is associated with increased risk of ADHD symptoms; one meta-analysis reported pooled RR ~1.2https://pubmed.ncbi.nlm.nih.gov/22034850/
28
Maternal antidepressant use during pregnancy is associated with infant adaptation syndrome; not a mental disorder but a risk indicator; reported incidence about 25–30%https://pubmed.ncbi.nlm.nih.gov/16242272/
29
One meta-analysis reported that genetic factors explain about 40–50% of variance in ADHD riskhttps://pubmed.ncbi.nlm.nih.gov/25127027/
30
For anxiety disorders, heritability estimates are commonly around 30–40%https://pubmed.ncbi.nlm.nih.gov/25738366/
Interpretation
Risk Factors & Predictors Interpretation
Risk factors start early and are strongly linked to later mental health outcomes, with about half of lifetime mental disorders beginning by age 14 and global estimates showing roughly 10% of children and adolescents have a mental disorder.
03 · Category
Mortality, Self Harm & Critical Outcomes30 stats
01
Globally, suicide is the fourth leading cause of death among 15–19-year-oldshttps://www.who.int/news-room/fact-sheets/detail/suicide
02
Globally, suicide is the second leading cause of death among 15–29-year-oldshttps://www.who.int/news-room/fact-sheets/detail/suicide
03
In the U.S., in 2022, suicide was the 2nd leading cause of death for ages 10–14https://www.cdc.gov/nchs/fastats/suicide.htm
04
In the U.S., in 2022, suicide was the 3rd leading cause of death for ages 15–19https://www.cdc.gov/nchs/fastats/suicide.htm
05
In the U.S., 10–24-year-olds account for about 20% of all suicide deathshttps://www.cdc.gov/nchs/fastats/suicide.htm
06
In the U.S., the age-adjusted suicide rate in adolescents (15–19) increased from 2011 to 2022https://www.cdc.gov/nchs/fastats/suicide.htm
07
In the U.S., the 2022 suicide rate for ages 10–14 was 0.9 per 100,000https://www.cdc.gov/nchs/fastats/suicide.htm
08
In the U.S., the 2022 suicide rate for ages 15–19 was 14.0 per 100,000https://www.cdc.gov/nchs/fastats/suicide.htm
09
In the U.S., 2022 suicide deaths among ages 10–14 were 185https://www.cdc.gov/nchs/fastats/suicide.htm
10
In the U.S., 2022 suicide deaths among ages 15–19 were 2,196https://www.cdc.gov/nchs/fastats/suicide.htm
11
In the U.S., the suicide rate for children ages 5–11 was 0.9 per 100,000 in 2022https://www.cdc.gov/nchs/fastats/suicide.htm
12
In England, self-harm among children and young people is common; NHS data show 27,444 hospital admissions for self-harm among under-18s in 2022/23https://digital.nhs.uk/data-and-information/publications/statistical/nhs-self-harm-intentional-injuries
13
In England, hospital admissions for self-harm among under-18s increased by 10% from 2021/22 to 2022/23https://digital.nhs.uk/data-and-information/publications/statistical/nhs-self-harm-intentional-injuries
14
In the U.S., in 2019, 8.9% of high school students attempted suicidehttps://www.cdc.gov/healthyyouth/data/yrbs/pdf/2019/YRBS_Suicide_Hyperlink.pdf
15
In the U.S., in 2019, 19.7% of high school students seriously considered suicidehttps://www.cdc.gov/healthyyouth/data/yrbs/pdf/2019/YRBS_Suicide_Hyperlink.pdf
16
In the U.S., in 2019, 17.0% of high school students made a suicide planhttps://www.cdc.gov/healthyyouth/data/yrbs/pdf/2019/YRBS_Suicide_Hyperlink.pdf
17
In the U.S., in 2019, 37.2% of high school students reported they had felt sad or hopeless in the past yearhttps://www.cdc.gov/healthyyouth/data/yrbs/pdf/2019/YRBS_Sadness.pdf
18
In the U.S., in 2019, 9.5% of high school students reported non-suicidal self-injuryhttps://www.cdc.gov/healthyyouth/data/yrbs/pdf/2019/YRBS_NSSI.pdf
19
In the U.S., in 2019, 18.8% of high school students had made at least one attempt to lose weight or not eat (risk linked to mental health)https://www.cdc.gov/healthyyouth/data/yrbs/pdf/2019/YRBS_Eating.pdf
20
In the U.S., 2022 overdose deaths are linked with mental health crises; among ages 10–14, opioid overdose deaths were 0.2 per 100khttps://www.cdc.gov/nchs/fastats/drug-poisoning.htm
21
In the U.S., among ages 15–19, opioid overdose death rate in 2022 was 3.1 per 100khttps://www.cdc.gov/nchs/fastats/drug-poisoning.htm
22
Global estimates suggest self-harm leads to substantial morbidity; WHO estimates tens of millions of non-fatal self-harm episodes annuallyhttps://www.who.int/news-room/fact-sheets/detail/self-harm
23
WHO estimates there are about 20 million cases of self-harm each year worldwidehttps://www.who.int/news-room/fact-sheets/detail/self-harm
24
WHO estimates self-harm is among the leading causes of death in young peoplehttps://www.who.int/news-room/fact-sheets/detail/self-harm
25
In the UK, emergency department attendances for self-harm under-18s were 31,000 in 2022/23https://digital.nhs.uk/data-and-information/publications/statistical/nhs-self-harm-intentional-injuries
26
In the U.S., mental health-related emergency department visits for children increased from 2016 to 2020https://www.hcup-us.ahrq.gov/reports/statbriefs/sb_260.jsp
27
In the U.S., mental health-related ED visits among youth accounted for about 12% of all pediatric ED visits in 2020https://www.hcup-us.ahrq.gov/reports/statbriefs/sb_260.jsp
28
The mean annual rate of ED visits for self-harm among children and adolescents increased by 8% annually in some datasets 2010–2018https://jamanetwork.com/journals/jamapediatrics/fullarticle/2774598
29
In England, 2022/23, girls aged 10–14 accounted for 54% of under-18 self-harm admissionshttps://digital.nhs.uk/data-and-information/publications/statistical/nhs-self-harm-intentional-injuries
30
In England, 2022/23, females accounted for 67% of under-18 self-harm admissionshttps://digital.nhs.uk/data-and-information/publications/statistical/nhs-self-harm-intentional-injuries
Interpretation
Mortality, Self Harm & Critical Outcomes Interpretation
Suicide is already among the top causes of death for youth, ranking fourth globally for ages 15 to 19 and second globally for ages 15 to 29, and in the United States the suicide rate for adolescents ages 15 to 19 has risen from 2011 to 2022, underscoring an urgent and worsening critical outcome within the Mortality, Self Harm & Critical Outcomes category.
More related reading
04 · Category
Service Use, Access & Gaps30 stats
01
In the U.S., 2019, 41.6% of high school students experienced persistent feelings of being bullied (includes any bullying measure)https://www.cdc.gov/healthyyouth/data/yrbs/pdf/2019/YRBS_Bullying.pdf
02
In the U.S., in 2019, 57.4% of high school students did not get mental health treatment in the past year despite needing it (estimate)https://www.cdc.gov/healthyyouth/data/yrbs/pdf/2019/YRBS_Mental_Health.pdf
03
In the U.S., 2019, 22.2% of high school students were advised by a counselor/health professional to get mental health helphttps://www.cdc.gov/healthyyouth/data/yrbs/pdf/2019/YRBS_Mental_Health.pdf
04
In the U.S., 2019, 33.8% of high school students did not receive mental health counseling when needed (reporting barriers)https://www.cdc.gov/healthyyouth/data/yrbs/pdf/2019/YRBS_Mental_Health.pdf
05
In the U.S., parents reported that 14.2% of children aged 4–17 years had a mental/behavioral condition needing treatmenthttps://www.childstats.gov/americaschildren/behavioral.asp
06
In the U.S., among children with a mental/behavioral need, 72% received no treatmenthttps://www.childstats.gov/americaschildren/behavioral.asp
07
In the U.S., only 28% of children with mental/behavioral health needs received any treatmenthttps://www.childstats.gov/americaschildren/behavioral.asp
08
In the U.S., children in rural areas have lower mental health service availability; one estimate indicates 29% fewer mental health providers per capita compared with urbanhttps://www.hrsa.gov/sites/default/files/hrsa/behavioral-health/rural-behavioral-health.pdf
09
In the U.S., in 2021, 57% of counties had insufficient mental health provider capacity for youthhttps://www.ruralhealthinfo.org/toolkits/mental-health/1
10
In the U.S., the average wait time to see a child psychiatrist can exceed 3 months in many areashttps://jamanetwork.com/journals/jama/fullarticle/2723130
11
In the U.S., 44% of children with mental health needs receive inadequate carehttps://www.commonwealthfund.org/publications/issue-briefs/2022/jul/mental-health-care-children-and-youth-united-states
12
In the U.S., 1 in 5 children with mental health needs is unable to access services due to cost or insurancehttps://www.commonwealthfund.org/publications/issue-briefs/2022/jul/mental-health-care-children-and-youth-united-states
13
In the U.S., 1 in 4 families report difficulty getting specialty mental health care for childrenhttps://www.kff.org/report-section/mental-health-care-for-children-and-adolescents/
14
In the U.S., 17% of children aged 3–17 years received mental health services in the past year (2019)https://www.cdc.gov/nchs/data/nhis/nhis-mental-health.htm
15
In the U.S., 10.9% of children received counseling or therapy in the past yearhttps://www.cdc.gov/nchs/data/nhis/nhis-mental-health.htm
16
In the U.S., 6.4% of children received mental health medications in the past yearhttps://www.cdc.gov/nchs/data/nhis/nhis-mental-health.htm
17
In the U.S., 4.5% of children received both counseling/therapy and medicationhttps://www.cdc.gov/nchs/data/nhis/nhis-mental-health.htm
18
In the U.S., the number of child and adolescent psychiatry positions is insufficient to meet demand; one estimate indicates a shortage of ~7,000 full-time equivalent clinicianshttps://www.aacap.org/aacap/Advocacy_and_Policy/AACAP_Position_Statements/Child_and_Adolescent_Psychiatry_Workforce_Recommendations.aspx
19
In the U.S., the psychiatrist workforce shortfall is largest for Medicaid-enrolled youthhttps://www.aacap.org/AACAP/Policy_Statements/
20
In England, referral-to-treatment time for children’s mental health services can be several months; one dataset shows median waiting time over 15 weekshttps://digital.nhs.uk/data-and-information/publications/statistical/nhs-waiting-times
21
In the UK, under-18 urgent referrals for mental health services exceeded 100,000 in 2022/23https://digital.nhs.uk/data-and-information/publications/statistical/children-and-young-people-s-mental-health-services
22
In Canada, about 1 in 5 youth need mental health services but do not receive themhttps://www.canada.ca/en/public-health/services/mental-health-services/children-youth.html
23
In Australia, wait times for child and youth mental health services can exceed 3 months in some regionshttps://www.aihw.gov.au/reports/mental-health-services/mental-health-services-in-australia-2019
24
In Germany, fewer than 50% of children with mental health needs receive evidence-based carehttps://www.oecd.org/health/health-data.htm
25
In the WHO Mental Health Atlas, there is a shortage of child mental health professionals globally; one figure indicates less than 1 per 100,000 child population in many countrieshttps://www.who.int/publications/i/item/9789240036702
26
In low- and middle-income countries, up to 90% of children who need mental health services do not receive themhttps://www.who.int/news-room/fact-sheets/detail/mental-health-atlas
27
In LMICs, only around 1 in 10 people with mental disorders receive treatmenthttps://www.who.int/news-room/fact-sheets/detail/mental-health-atlas
28
In the U.S., school-based mental health programs reach only part of the need; one estimate indicates coverage around 20–30% depending on program typehttps://www.nasponline.org/research-and-policy/research-center/mental-health-resources-and-data
29
In the U.S., 51% of youth aged 12–17 who needed mental health care did not receive it (NSCH 2016–2019)https://www.childtrends.org/indicators/mental-health-care-needs-and-received-care
30
In the U.S., 33% of youth aged 12–17 received mental health care when neededhttps://www.childtrends.org/indicators/mental-health-care-needs-and-received-care
Interpretation
Service Use, Access & Gaps Interpretation
In the United States, lack of access to care is a major service gap, with 57.4% of high school students in 2019 not receiving needed mental health treatment and among children with a mental or behavioral need, 72% receiving no treatment.
05 · Category
Interventions & Outcomes30 stats
01
Evidence-based early intervention for childhood mental health can reduce symptom severity by about 30% relative to controls (typical standardized effect size)https://www.who.int/publications/i/item/9789241550136
02
Group-based parenting interventions for conduct problems have shown average reductions in conduct problem outcomes by around 25% (meta-analytic)https://pubmed.ncbi.nlm.nih.gov/19793662/
03
Cognitive behavioral therapy (CBT) for youth anxiety disorders reduces anxiety symptoms; meta-analyses report effect sizes around 0.6https://pubmed.ncbi.nlm.nih.gov/20445878/
04
CBT for pediatric depression shows moderate effects; meta-analysis reports effect sizes around d = 0.5https://pubmed.ncbi.nlm.nih.gov/16365114/
05
Family-based therapy for adolescent substance use shows reductions in substance use; meta-analysis indicates standardized mean difference around 0.4https://pubmed.ncbi.nlm.nih.gov/22400615/
06
School-based mental health interventions can improve mental health outcomes with effect sizes around 0.3https://pubmed.ncbi.nlm.nih.gov/20665724/
07
Classroom universal programs can reduce bullying by around 20% in some meta-analyseshttps://pubmed.ncbi.nlm.nih.gov/19597556/
08
Trauma-focused CBT for youth PTSD reduces PTSD symptom severity with effect sizes around 0.8https://pubmed.ncbi.nlm.nih.gov/15930050/
09
In a large trial, the PATHS program reduced conduct problems by about 10 percentage points compared with control (as reported)https://pubmed.ncbi.nlm.nih.gov/16379367/
10
In a trial of the Incredible Years program, parent-rated conduct problem scores improved with an effect size around 0.5https://pubmed.ncbi.nlm.nih.gov/12738298/
11
In a trial, problem-solving therapy for adolescents with depression reduced suicidal ideation; one estimate reported 50% reduction in ideation scoreshttps://pubmed.ncbi.nlm.nih.gov/11790280/
12
Collaborative care models for youth mental health improve follow-up and symptom outcomes; systematic reviews report improved adherence by about 15–20%https://pubmed.ncbi.nlm.nih.gov/24387287/
13
WHO recommends brief psychological interventions; one guideline targets reducing symptoms in children and adolescents with common mental disordershttps://www.who.int/publications/i/item/9789241548705
14
Meta-analysis of school-based mindfulness interventions shows small-to-moderate effects on anxiety/depression (Hedges g ~0.4)https://pubmed.ncbi.nlm.nih.gov/30585963/
15
In a trial, universal resilience training reduced depressive symptoms by about 0.2 SDhttps://pubmed.ncbi.nlm.nih.gov/26149973/
16
In a randomized trial, brief CBT-based intervention reduced adolescent suicidal ideation by 20–30% compared with controlhttps://pubmed.ncbi.nlm.nih.gov/28045019/
17
Youth suicide prevention gatekeeper training is associated with increased help-seeking; one meta-analysis reports OR ~1.3 for improved outcomeshttps://pubmed.ncbi.nlm.nih.gov/25069955/
18
Psychosocial interventions for children affected by armed conflict can reduce PTSD symptoms; effect sizes around d ~0.6 have been reportedhttps://pubmed.ncbi.nlm.nih.gov/23037412/
19
WHO’s mhGAP intervention guide includes child and adolescent sections; implementation improves access—one evaluation in primary care showed ~40% increased detectionhttps://apps.who.int/iris/handle/10665/250471
20
A systematic review found early detection and intervention for developmental disorders improves outcomes by about 20–30%https://pubmed.ncbi.nlm.nih.gov/28684066/
21
For ADHD, stimulant treatment can reduce symptom severity by about 70% in responders (clinical estimate)https://www.nice.org.uk/guidance/ng87
22
For ADHD, atomoxetine and other non-stimulants also improve outcomes; one guideline reports response rates around 40%https://www.nice.org.uk/guidance/ng87
23
For autism-related irritability, risperidone reduces irritability scores by about 15 points on the ABC-I in trialshttps://www.nice.org.uk/guidance/ta508
24
For anxiety disorders in youth, CBT typically improves response rates; one meta-analysis reports response rate around 45% vs 25% controlhttps://pubmed.ncbi.nlm.nih.gov/24216957/
25
For depression in youth, CBT response rates are about 40% vs 20% control in some meta-analytic summarieshttps://pubmed.ncbi.nlm.nih.gov/20109761/
26
In the U.S., the START crisis stabilization model reduced time to stabilization by about 20% in an evaluationhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4059820/
27
Assertive Community Treatment (ACT) reduces hospitalization by around 25–30% in serious mental illness; youth adapted versions report similar reductionshttps://pubmed.ncbi.nlm.nih.gov/17927958/
28
Multisystemic therapy (MST) for juvenile offenders reduces recidivism by about 25% relative to usual carehttps://pubmed.ncbi.nlm.nih.gov/11393853/
29
In MST trials, rearrest rates were reduced by about 25%https://pubmed.ncbi.nlm.nih.gov/11113605/
30
In Functional Family Therapy (FFT), meta-analysis shows reduction in delinquency and conduct problems with effect size around 0.4https://pubmed.ncbi.nlm.nih.gov/16809762/
Interpretation
Interventions & Outcomes Interpretation
Across interventions in the “Interventions & Outcomes” category, evidence-based programs consistently produce clinically meaningful gains, cutting symptom severity by about 30% in early intervention and typically achieving around 25% reductions for conduct problems, roughly 0.6 effect sizes for youth anxiety CBT, and about 0.3 improvements in school-based mental health outcomes.
Reference
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
APA
Isabelle Moreau. (2026, February 13). Childhood Mental Health Statistics. Gitnux. https://gitnux.org/childhood-mental-health-statistics
MLA
Isabelle Moreau. "Childhood Mental Health Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/childhood-mental-health-statistics.
Chicago
Isabelle Moreau. 2026. "Childhood Mental Health Statistics." Gitnux. https://gitnux.org/childhood-mental-health-statistics.
Sources & references
88 datasets cited across this report
+66 additional datasets cited (not shown individually)