A Child Care-based Obesity Prevention Intervention

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

640 participants

Study Classification

INTERVENTIONAL

Study Start Date

2011-05-31

Study Completion Date

2013-05-31

Brief Summary

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The overall objective is to determine the impact of comprehensive, multifaceted, child care-based intervention to prevent obesity among children 2 through 5 years of age. The specific aims are:

1. To determine the extent to which the intervention, compared with the control condition, results in a smaller age-associated increase in body mass index (BMI) after a 6-month intervention (primary outcome) and a 1-year follow-up period among children.
2. To determine the extent to which the intervention, compared with the control condition, reduces the proportion of children who are obese (BMI \>95th percentile for age and sex).
3. To determine the extent to which the intervention, compared with the control condition, results in:

1. improved dietary, physical activity and television-viewing behaviors among children, specifically, reducing the consumption of sugar-sweetened beverages, high calorie/low nutrient-dense snack foods, and fast food, increasing active time, and reducing TV/video viewing time;
2. improved home food and activity environment, specifically, decreasing availability of sugar-sweetened beverages and high calorie/low nutrient-dense snack foods, and increasing parental support for healthy eating and regular physical activity;
3. improved child care center food and activity environment, specifically, increasing opportunities for healthy eating and physical activity, and increasing support and encouragement of children's behavior change by child care providers;
4. To assess the feasibility and acceptability of the intervention among child care providers and families.

METHODS. The investigators will conduct a cluster-randomized controlled trial in 16 IMSS child care centers in Mexico City. The investigators will randomly assign 8 child care centers to the intervention condition and 8 to an assessment-only control condition.

Multifaceted intervention. The resulting intervention will involve four main components:

1. Training of child care providers.
2. Curriculum sessions for children.
3. Family outreach activities.
4. Maintenance activities. Outcome and process measurements. Age-associated BMI (child's), changes in child's key obesity-related behaviors, changes in the child's home food and activity environment, and changes in child care food and activity environment. At the intervention and control child care sites, changes from baseline to one year for all outcome variables will be measured.

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Detailed Description

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Over the past 20 years, the prevalence of obesity in Mexico has increased dramatically among individuals across the lifespan, including even the youngest populations.National data from the Mexican Institute of Social Security (IMSS) population estimate that nearly 15% of children aged 2 to 5 years are obese as defined by World Health Organization criteria. Obesity among preschool-aged children is of serious public health concern due to its adverse effects on children's physical and psychosocial well-being,and its association with obesity risk in later childhood, adolescence, and young adulthood. Furthermore, because dietary and activity patterns have not been firmly established, early childhood represents a critical window for prevention.

Given the high number of preschool children enrolled in out-of-home child care in Mexico, important opportunities exist for developing child care-based obesity prevention interventions focused on promoting healthy activity and dietary behaviors among children. Child care centers provide an ideal setting for a multi-level, ecologic intervention that includes strategies aimed at environmental level changes within the child care center, as well as individual level behavior change among the children. In addition, child care-based interventions have the potential to reach out to the children's families to improve the child's home food and activity environment.

Setting and study population. There are 142 IMSS child care centers in Mexico City. To allow for adequate attention to details in the development of the intervention and evaluation protocol and to contain costs prior to broad dissemination of the program, the investigators will focus on 16 IMSS child care sites for this proposal, which together provide care for approximately 450 children aged 2 to 5 years. At each IMSS child care center a team consisting of a nutritionist, a nurse, an educator, and child care technicians provides the daily care and education programs for the children. This extensive personnel structure provides the ideal infrastructure for implementing the proposed multifaceted intervention.

Since the intervention is a primary prevention program, the investigators will make the program available to all children, aged 2 to 5 years, at the child care centers, regardless of their current weight status. Children with chronic conditions that limit ability to measure height and weight or substantially interfere with growth, physical activity, or dietary recommendations will be excluded.

Data analysis for outcome measures. Intent-to-treat analyses to compare study outcomes between the intervention and control groups at post-intervention and at 6-months follow-up will be used. To compare the difference the age-associated increase in body mass index (BMI) among intervention and control groups (Aim 1), the mixed effects model with group (child care center) as the clustering factor will be used, as recommended by several authoritative sources. Similar analyses to compare the difference in prevalence of overweight (Aim 2), in the children's weight-related behaviors (Aim 3a), in the children's home environment (Aim 3b), and in the environment of the child care center (Aim 3c) will be performed.

Conditions

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Obesity

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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primary obesity prevention

The intervention will involve four main components:

1. Training of child care providers.
2. Curriculum sessions for children.
3. Family outreach activities.
4. Maintenance activities.

Group Type EXPERIMENTAL

primary obesity prevention

Intervention Type BEHAVIORAL

1. Training of child care providers.
2. Curriculum sessions for children. Child care providers will facilitate 12 interactive education sessions that focus on key obesity-related behaviors.
3. Family outreach activities. Child care providers and research staff will communicate behavior change messages to families through ten take-home activities focused on key obesity-related behaviors and through monthly family workshops at the child care center.
4. Maintenance activities. Over the six months following the main intervention, research staff will conduct eight booster sessions for the children and one booster session for the family that will build upon activities and behavior change messages of the main intervention.

Control group

For the control group, usual care will be provided

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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primary obesity prevention

1. Training of child care providers.
2. Curriculum sessions for children. Child care providers will facilitate 12 interactive education sessions that focus on key obesity-related behaviors.
3. Family outreach activities. Child care providers and research staff will communicate behavior change messages to families through ten take-home activities focused on key obesity-related behaviors and through monthly family workshops at the child care center.
4. Maintenance activities. Over the six months following the main intervention, research staff will conduct eight booster sessions for the children and one booster session for the family that will build upon activities and behavior change messages of the main intervention.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* IMSS child care centers with at least 40 children aged 2-4 years
* Child care center director that is willing to participate in the study and agrees to be randomized to control or intervention conditions. Since the intervention is a primary prevention program, the program will be available to all children, aged 2 to 4 years, at the child care centers, regardless of their current weight status
* Children's parents who sign a consent form indicating their permission for their child to participate in the study and their willingness to participate in the measurement activities

Exclusion Criteria

* Children with chronic conditions that limit ability to measure height and weight or substantially interfere with growth, physical activity, or dietary recommendations from the measurement activities

Minimum Eligible Age

2 Years

Maximum Eligible Age

4 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes