Charles Opondo
Datos Biográficos
| ID | 3933107 |
|---|---|
| NOMBRE | Charles Opondo |
| NOMBRES | Charles |
| APELLIDO | Opondo |
| FIRMA | OPONDO C |
| AFILIACIONES | Department of Medical Statistics, Faculty of Epidemiology & Population Health London School of Hygiene & Tropical Medicine London UK |
| VERIFICADO | No |
| TOTAL DE OBRAS | 14 |
| TOTAL DE CITAS | 3 |
| TOTAL COMO AUTOR | 14 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 2018 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2026 |
| ÍNDICE H | 1 |
A systematic review and equity analysis of school-based violence prevention interventions evaluated in randomised controlled trials
Experiencing violence in school is a violation of a child’s rights and can increase school absence, affect academic achievement, employment prospects, and later-life health. Effective school-based violence prevention interventions are crucial, however, most are universally targeted. It is less clear if current interventions to prevent violence in schools ensure subgroups of children benefit equitably. We conducted a systematic review. We drew on …
Effects of a whole-school relationships and sexual health intervention on non-competent sexual debut
BACKGROUND: Relationships and sex education (RSE) impacts some sexual behaviours but could be strengthened by incorporating whole-school approaches (eg, building engagement, providing contraception). These can prevent pregnancies and sexually-transmitted infections but are unevaluated in UK schools. METHODS: A cluster-randomised trial of 'Positive Choices' compared it with usual practice in English secondary schools. Intervention comprised: RSE, …
From Insult to Injury
The relationships between severe malnutrition (SM), rehabilitation weight gain, and cardiometabolic risk in adult survivors have not been fully elucidated. We utilised a previously collected data set to explore these associations in a cohort of adults who were hospitalised for SM as children from 1963 to 1995. We studied 278 adult SM survivors: 60% male; median age (IQR) 26.5(11.3) years; mean BMI 23.6(5.2) kg/m 2 ). Children's minimum weight-for…
Piloting Multiple Micronutrient Supplementation Within the Routine Antenatal Care System in Ethiopia
In low and middle-income countries, addressing maternal and child nutrition needs is crucial. Prenatal multiple micronutrient supplementation (MMS) holds promise in reducing low birthweight and preterm births. Ethiopia is considering a transition from the provision of iron-folate supplementation to the provision of MMS in antenatal care, guided by WHO guidelines. This paper explores stakeholders' early perceptions and experiences in piloting that…
The Good School Toolkit–Secondary to prevent violence against students
Pan African Clinical Trials Registry, PACTR202009826515511, 16/09/20
The mechanisms by which a whole-school intervention might improve sexual health
Whole-school interventions go beyond classroom education, promoting health by modifying school environments. These can be effective in delaying sexual debut and increasing contraception use but mechanisms are poorly understood. Qualitative research within realist evaluation can explore mechanisms via building 'context-mechanism-outcome configurations', describing how interventions trigger mechanisms that interact with context to generate outcomes…
Rates and risk factors for antepartum and intrapartum stillbirths in 20 secondary hospitals in Imo state, Nigeria
Despite Nigeria’s stillbirth rate reducing from 28.6 to 22.5 per 1,000 births from 2000–2021, progress trails comparable indicators and regional variations persist. We assessed stillbirth incidences and associated risk factors in 20 secondary hospitals in Imo state, to generate essential local evidence to inform policymaking to reduce mortality. The total numbers of births and their outcomes were determined through hospital maternity registers. A…
Before and after study of a national complementary and supplementary feeding programme in Rwanda, 2017–2021
To address high rates of malnutrition among children from vulnerable households in Rwanda, the government initiated a national food supplementation programme. A before and after evaluation, using repeat cross-sectional surveys in randomly selected villages was conducted; aimed at assessing the effectiveness of providing fortified blended food (FBF) to children 18-23 months of age, pregnant and lactating women in the lowest tier of Rwanda's social…
Faster rehabilitation weight gain during childhood is associated with risk of non-communicable disease in adult survivors of severe acute malnutrition
Nutritional rehabilitation during severe acute malnutrition (SAM) aims to quickly restore body size and minimize poor short-term outcomes. We hypothesized that faster weight gain during treatment is associated with greater cardiometabolic risk in adult life. Anthropometry, body composition (DEXA), blood pressure, blood glucose, insulin and lipids were measured in a cohort of adults who were hospitalized as children for SAM between 1963 and 1993. …
How age and sex affect treatment outcomes for children with severe malnutrition
Age and sex influence the risk of childhood wasting. We aimed to determine if wasting treatment outcomes differ by age and sex in children under 5 years, enroled in therapeutic and supplementary feeding programmes. Utilising data from stage 1 of the ComPAS trial, we used logistic regression to assess the association between age, sex and wasting treatment outcomes (recovery, death, default, non-response, and transfer), modelling the likelihood of …
Examining intervention mechanisms of action using mediation analysis within a randomised trial of a whole-school health intervention
BACKGROUND: Interventions to modify school environments are effective in promoting young people's health across outcomes, but mechanisms are poorly understood. We assessed mediation in a trial of the Learning Together intervention, building on the recent publication of results of effectiveness for reducing bullying and benefits across secondary outcomes and generally good implementation fidelity. METHODS: Within a cluster-randomised trial involvi…
Action groups as a participative strategy for leading whole‐school health promotion
Education policy increasingly promotes action groups as a key strategy for student and/or staff participation in school improvement and whole‐school health promotion. Such groups can coordinate multi‐component interventions, increase participation and engagement, and enable local adaptations, but few process evaluations have assessed this. We evaluated fidelity, feasibility and acceptability of action groups as part of a trial of a whole‐school i…
Effects of the Learning Together intervention on bullying and aggression in English secondary schools (INCLUSIVE)
BACKGROUND: Bullying, aggression, and violence among children and young people are some of the most consequential public mental health problems. We tested the Learning Together intervention, which involved students in efforts to modify their school environment using restorative practice and by developing social and emotional skills. METHODS: We did a cluster randomised trial, with economic and process evaluations, of the Learning Together interve…
Health impacts of parental migration on left-behind children and adolescents
Effects of a whole-school relationships and sexual health intervention on non-competent sexual debut
BACKGROUND: Relationships and sex education (RSE) impacts some sexual behaviours but could be strengthened by incorporating whole-school approaches (eg, building engagement, providing contraception). These can prevent pregnancies and sexually-transmitted infections but are unevaluated in UK schools. METHODS: A cluster-randomised trial of 'Positive Choices' compared it with usual practice in English secondary schools. Intervention comprised: RSE, …
Examining intervention mechanisms of action using mediation analysis within a randomised trial of a whole-school health intervention
BACKGROUND: Interventions to modify school environments are effective in promoting young people's health across outcomes, but mechanisms are poorly understood. We assessed mediation in a trial of the Learning Together intervention, building on the recent publication of results of effectiveness for reducing bullying and benefits across secondary outcomes and generally good implementation fidelity. METHODS: Within a cluster-randomised trial involvi…
Action groups as a participative strategy for leading whole‐school health promotion
Education policy increasingly promotes action groups as a key strategy for student and/or staff participation in school improvement and whole‐school health promotion. Such groups can coordinate multi‐component interventions, increase participation and engagement, and enable local adaptations, but few process evaluations have assessed this. We evaluated fidelity, feasibility and acceptability of action groups as part of a trial of a whole‐school i…
Effects of the Learning Together intervention on bullying and aggression in English secondary schools (INCLUSIVE)
BACKGROUND: Bullying, aggression, and violence among children and young people are some of the most consequential public mental health problems. We tested the Learning Together intervention, which involved students in efforts to modify their school environment using restorative practice and by developing social and emotional skills. METHODS: We did a cluster randomised trial, with economic and process evaluations, of the Learning Together interve…
Health impacts of parental migration on left-behind children and adolescents
Examining intervention mechanisms of action using mediation analysis within a randomised trial of a whole-school health intervention
BACKGROUND: Interventions to modify school environments are effective in promoting young people's health across outcomes, but mechanisms are poorly understood. We assessed mediation in a trial of the Learning Together intervention, building on the recent publication of results of effectiveness for reducing bullying and benefits across secondary outcomes and generally good implementation fidelity. METHODS: Within a cluster-randomised trial involvi…
Action groups as a participative strategy for leading whole‐school health promotion
Education policy increasingly promotes action groups as a key strategy for student and/or staff participation in school improvement and whole‐school health promotion. Such groups can coordinate multi‐component interventions, increase participation and engagement, and enable local adaptations, but few process evaluations have assessed this. We evaluated fidelity, feasibility and acceptability of action groups as part of a trial of a whole‐school i…
Faster rehabilitation weight gain during childhood is associated with risk of non-communicable disease in adult survivors of severe acute malnutrition
Nutritional rehabilitation during severe acute malnutrition (SAM) aims to quickly restore body size and minimize poor short-term outcomes. We hypothesized that faster weight gain during treatment is associated with greater cardiometabolic risk in adult life. Anthropometry, body composition (DEXA), blood pressure, blood glucose, insulin and lipids were measured in a cohort of adults who were hospitalized as children for SAM between 1963 and 1993. …
How age and sex affect treatment outcomes for children with severe malnutrition
Age and sex influence the risk of childhood wasting. We aimed to determine if wasting treatment outcomes differ by age and sex in children under 5 years, enroled in therapeutic and supplementary feeding programmes. Utilising data from stage 1 of the ComPAS trial, we used logistic regression to assess the association between age, sex and wasting treatment outcomes (recovery, death, default, non-response, and transfer), modelling the likelihood of …
Rates and risk factors for antepartum and intrapartum stillbirths in 20 secondary hospitals in Imo state, Nigeria
Despite Nigeria’s stillbirth rate reducing from 28.6 to 22.5 per 1,000 births from 2000–2021, progress trails comparable indicators and regional variations persist. We assessed stillbirth incidences and associated risk factors in 20 secondary hospitals in Imo state, to generate essential local evidence to inform policymaking to reduce mortality. The total numbers of births and their outcomes were determined through hospital maternity registers. A…
Before and after study of a national complementary and supplementary feeding programme in Rwanda, 2017–2021
To address high rates of malnutrition among children from vulnerable households in Rwanda, the government initiated a national food supplementation programme. A before and after evaluation, using repeat cross-sectional surveys in randomly selected villages was conducted; aimed at assessing the effectiveness of providing fortified blended food (FBF) to children 18-23 months of age, pregnant and lactating women in the lowest tier of Rwanda's social…
From Insult to Injury
The relationships between severe malnutrition (SM), rehabilitation weight gain, and cardiometabolic risk in adult survivors have not been fully elucidated. We utilised a previously collected data set to explore these associations in a cohort of adults who were hospitalised for SM as children from 1963 to 1995. We studied 278 adult SM survivors: 60% male; median age (IQR) 26.5(11.3) years; mean BMI 23.6(5.2) kg/m 2 ). Children's minimum weight-for…
Piloting Multiple Micronutrient Supplementation Within the Routine Antenatal Care System in Ethiopia
In low and middle-income countries, addressing maternal and child nutrition needs is crucial. Prenatal multiple micronutrient supplementation (MMS) holds promise in reducing low birthweight and preterm births. Ethiopia is considering a transition from the provision of iron-folate supplementation to the provision of MMS in antenatal care, guided by WHO guidelines. This paper explores stakeholders' early perceptions and experiences in piloting that…
The Good School Toolkit–Secondary to prevent violence against students
Pan African Clinical Trials Registry, PACTR202009826515511, 16/09/20
The mechanisms by which a whole-school intervention might improve sexual health
Whole-school interventions go beyond classroom education, promoting health by modifying school environments. These can be effective in delaying sexual debut and increasing contraception use but mechanisms are poorly understood. Qualitative research within realist evaluation can explore mechanisms via building 'context-mechanism-outcome configurations', describing how interventions trigger mechanisms that interact with context to generate outcomes…
A systematic review and equity analysis of school-based violence prevention interventions evaluated in randomised controlled trials
Experiencing violence in school is a violation of a child’s rights and can increase school absence, affect academic achievement, employment prospects, and later-life health. Effective school-based violence prevention interventions are crucial, however, most are universally targeted. It is less clear if current interventions to prevent violence in schools ensure subgroups of children benefit equitably. We conducted a systematic review. We drew on …
Effects of a whole-school relationships and sexual health intervention on non-competent sexual debut
BACKGROUND: Relationships and sex education (RSE) impacts some sexual behaviours but could be strengthened by incorporating whole-school approaches (eg, building engagement, providing contraception). These can prevent pregnancies and sexually-transmitted infections but are unevaluated in UK schools. METHODS: A cluster-randomised trial of 'Positive Choices' compared it with usual practice in English secondary schools. Intervention comprised: RSE, …
Medicine (9 obras) · Child Nutrition and Water Access (5 obras) · Public health (5 obras) · Bullying, Victimization, and Aggression (4 obras) · Psychological intervention (4 obras) · Randomized controlled trial (4 obras) · Environmental health (3 obras) · Food Security and Health in Diverse Populations (3 obras) · Internal Medicine (3 obras) · Intervention (counseling) (3 obras)