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Preventing Physical and Emotional Violence by Parents and Teachers in Public Schools in Tanzania (ICC-T/ICC-P_Tanz)

Improving Children's Mental Health by Preventing Teacher and Family Violence: A Pilot Cluster-randomized Controlled Trial

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06369025
Acronym
PreVio
Enrollment
1848
Registered
2024-04-16
Start date
2024-04-15
Completion date
2025-07-30
Last updated
2025-09-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Violence

Keywords

school violence, teacher violence, parental violence, family violence, children, public schools, primary schools

Brief summary

More than 1.7 billion children worldwide experience violence in their upbringing. Prevalence rates are particularly high in Africa. Toxic stress associated with violence impacts the developing brain. This affects behavioral, social, and emotional functioning of children. The present project will test an intervention that simultaneously aims at reducing violence against children at home and at school. Within the project, (1) the feasibility, acceptability, and cost-effectiveness of the Intervention and (2) the initial effectiveness of reducing parental and teacher violence will be tested. To this end, a mixed-methods two-arm school-based pilot cluster-randomized controlled trial (CRCT) in Tanzania will be conducted. One unique and novel aspect of this project is to test a school-based intervention approach that targets both teachers and parents. A school-based approach including both teachers and parents has the following key advantages: (1) parents of different social, economic, and educational backgrounds can be motivated to participate and (2) using the existing infrastructure of schools reduces costs and will later improve the scalability of the program. The project is bringing together the global health, development economy, and psychological perspectives to promote our collaboration within the German global health community and with research and policy partners in Tanzania.

Detailed description

The study is a two-arm cluster-randomized controlled trial with 16 primary schools (clusters) in the Urban District of Morogoro in Eastern Tanzania as level of randomization. The eligible schools are located in 20 wards (smallest administrative unit). To avoid cross-over effects between the study conditions, only one school per ward will be selected. To select the final sample of schools, 16 out of the 20 wards schools will be randomly selected and then one school from each ward. Then pairs of schools will be randomly formed. These has primarily logistical reasons: Due to the short project period (12 months), the implementation of the intervention will start after completion of the baseline assessment in the first pair of schools and after randomly allocation of the first school to the intervention condition. The selection and allocation of the schools will be performed by an independent researcher neither belonging to the core research team nor involved in data collection process. At each school, 45 students in the in 5th school grade, 90 parents (45 mothers & 45 fathers = 90 parents) and 25 teacher will be recruited. Thus the final sample will comprise 720 students, 720 parent pairs (720 mothers & 720 fathers) and 400 teachers at baseline across 16 schools. The study will have two data assessment points: baseline assessment prior to the intervention, the one follow-up assessment three months after the intervention. In addition, feasibility data will be assessed in the intervention group at the beginning and the end of the intervention. The cluster-randomized control trails will additionally be accompanied by a process evaluation.Qualitative information will be collected after intervention training of parents and teachers to complement the quantitative data. Primary outcome measures are student-, parents- and teacher-reported physical and emotional violence by the parents or teachers in the past week. Secondary outcome measures include adult-child relationship, children's emotional and behavioral problems, quality of life, parents' and teachers' stress level and school climate.

Interventions

Interaction Competencies with Children - for Teachers (ICC-T) Core training components include teacher-student interaction, maltreatment prevention, effective discipline strategies, identifying and supporting burdened students and implementation of the training materials into the school setting. Interaction Competencies with Children - for Parents (ICC-P) Core training components include parents-child interaction, maltreatment prevention, effective discipline strategies, identifying and supporting burdened students and implementation of the training materials into the home

Sponsors

Technical University of Munich
CollaboratorOTHER
Dar es Salaam University College of Edcuation
CollaboratorUNKNOWN
Muhimbili University of Health and Allied Sciences
CollaboratorOTHER
Bielefeld University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
9 Years to 80 Years
Healthy volunteers
Yes

Inclusion criteria

General: Inclusion Criteria: Schools: * Public primary schools * at least 45 students in selected class/ stream * least 25 but no more than 50 employed teacher in selected school. All participants: \- Written informed consent (if underaged by parents (written) & minors themselves (orally) Students: * Enrollment in selected public primary school, age between 9 and 13 years * living with their caregiver or parents near to the schools Teachers: * employed at the selected schools * aged between 18 and 60 years of age (statutory retirement age) Parents: * their child is participating in the study and is enrolled in a study's eligible school, * social parent (the parent currently taking care of the child independent of the biological relationship to the children; social parents can be biological parents, step-parents, foster parents, relatives, etc.) * aged between 16 and 80 years of age

Exclusion criteria

(all participants): * Acute drug or alcohol intoxication, * acute psychotic disorder * severe mental disabilities

Design outcomes

Primary

MeasureTime frameDescription
Reduction of children's exposure to emotional and physical violence by parents and teachersThe CTS will be used at T1 (baseline, prior to intervention) and T2 (follow-up, 3 months after intervention)The Conflict Tactics Scale (CTS) will be used to assess children's self-reported experiences of emotional and physical violence by parents at home and teachers at school in the past week. Higher scores indicate higher levels of violence that is used by parents or teachers. A stronger reduction of exposure to violence in the children of parents and teachers of the intervention group compared to the control group is hypothesized.
Reduction of parents' or teachers' use of emotional and physical violenceThe CTS will be used at T1 (baseline, prior to intervention) and T2 (follow-up, 3 months after intervention)The Conflict Tactics Scale (CTS) will be used to assess parents' and teachers' use of emotional and physical violent discipline measures against children in the past week. Higher scores indicate higher levels of violence that is used by parents or teachers. A stronger reduction of violence use by parents and teachers of the intervention group compared to the control group is hypothesized.

Secondary

MeasureTime frameDescription
Improvement of children's mental healthThe PSC-Y will be used at T1 (baseline, prior to intervention) and T2 (first follow-up, 3 months after intervention)The Pediatric Symptom Checklist - Youth Report (PSC-Y) will assess children's emotional and behavioral problems reported by children and parents. Higher scores indicate higher levels of children's mental health problems. A stronger improvement of mental health problems in the children of parents and teachers of the intervention group compared to the control group is hypothesized.
Change of parents' and teachers' attitudes towards emotional and physical violenceThe adapted version of CTS will be used at T1 (baseline, prior to intervention) and T2 (follow-up, 3 months after intervention)Teachers' and parents' attitudes towards emotional and physical violence will be assessed with an adapted version of the Conflict Tactic Scale (CTS). Higher scores indicate higher levels of positive attitudes towards violence. A stronger reduction of favourable attitudes towards violence of parents and teachers of the intervention group compared to the control group is hypothesized.
Increase of children's quality of lifeThe KIDSCREEN-10 will be used at T1 (baseline, prior to intervention) and T2 (follow-up, 3 months after intervention)The KIDSCREEN-10 will assess children's quality of life reported by children and parents. Higher scores indicate higher levels of children's quality of life. A stronger increase of quality of life in the children of parents and teachers of the intervention group compared to the control group is hypothesized.
Improvement of school climateThe Teacher Relationship with Colleagues will be used at T1 (baseline, prior to intervention) and T2 (follow-up, 3 months after intervention)The Teacher Relationship with Colleagues will assess school climate reported by teachers. Higher scores indicate higher quality of school climate. A stronger increase of school climate quality in the intervention group compared to the control group is hypothesized.

Other

MeasureTime frameDescription
Improvement of teachers' decision makingTeacher Participation in Decision Making will be used at T1 (baseline, prior to intervention) and T2 (follow-up, 3 months after intervention)The Teacher Participation in Decision Making will assess the teachers' decision making strategies reported by teachers. Higher scores indicate better decision making strategies. A stronger increase indecision making strategies in the intervention group compared to the control group is hypothesized.
Improvement of teachers' self-efficacyTeachers Sense of Efficacy Scale will be used at T1 (baseline, prior to intervention) and T2 (follow-up, 3 months after intervention)The Teachers Sense of Efficacy Scale will assess the teachers' self-efficacy reported by teachers. Higher scores indicate higher levels of self-efficacy. A stronger increase of self-efficacy in the intervention group compared to the control group is hypothesized.
Reduction of parents' and teachers' perceived stressThe Parental Stress Scale and the Teachers Stress Inventory will be used at T1 (baseline, prior to intervention) and T2 (follow-up, 3 months after intervention)The Parental Stress Scale will assess the perceived stress of parents reported by parents. The Teachers Stress Inventory will assess the perceived stress of teachers reported by teachers. Higher scores indicate higher levels of stress. A stronger decrease of parents' and teachers' perceived stress in the intervention group compared to the control group is hypothesized.
Reduction of children's perceived stressThe Stress Scale for Kids will be used at T1 (baseline, prior to intervention) and T2 (follow-up, 3 months after intervention)The Stress Scale for Kids will assess the perceived stress of children reported by children. Higher scores indicate higher levels of stress. A stronger decrease of children's perceived stress in the children of parents and teachers of the intervention group compared to the control group is hypothesized.

Countries

Tanzania

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 5, 2026