Reducing child obesity: the intervention logic model

The reducing childhood obesity intervention logic model sets out a number of shared goals, outcomes and indicators for the New Zealand Childhood Obesity Programme

The model aligns with the recommendations of the World Health Organization’s Commission on Ending Childhood Obesity (WHO 2016) and was developed in consultation with the Ministry of Education, Sport New Zealand, the Health Promotion Agency, the Education Review Office, the New Zealand Transport Agency and the Accident Compensation Corporation.

The model includes four medium-term outcomes that describe what we hope to achieve over the next 4–5 years:

  • more children are physically active
  • more children eat well
  • children’s environments support physical activity and healthy eating
  • more children have improved health outcomes.

The model also includes an agreed set of performance indicators (known as the reducing childhood obesity indicators), which will allow us to measure whether the medium-term outcomes are being achieved. Each indicator was chosen based on its relevance to childhood obesity and its ability to be measured using existing data collections. Some of the indicators are outcomes-focused (eg, percentage of children whose body mass index is within a healthy weight range); others focus on the drivers of childhood obesity (eg, unhealthy eating and low levels of physical activity).

You can view a diagram of the intervention logic model, or read the description below.

Reducing child obesity: diagram of the intervention logic model. See below for text description.
Click to enlarge.

Ultimate goal

Children and young people living and staying well

Long-term goal

Reduce childhood obesity in New Zealand equitably*

*Reduce rates of obesity for all children, particularly Māori, Pacific and high deprivation groups.

Medium-term outcomes

More children are physically active
Indicator Measure
Time spent watching television, videos or screens Percentage of children (aged 2–14 years) who usually watch two or more hours of television (including DVDs and videos) per day (New Zealand Health Survey)
Sleep duration Percentage of children (aged 5–13 years) who get 9 to 11 hours of sleep per day (New Zealand Health Survey)
Time spent on physical activity Percentage of children (aged 5–17 years) who spent at least one hour per day being physically active (for sport, physical education, exercise or fun) over the last week (Active New Zealand Survey)
More children eat well
Indicator Measure
Breastfeeding Percentage of infants who are exclusively or fully breastfed at 2 weeks, 6 weeks, 3 months, and who are still receiving breast milk at 6 months (Well Child Survey)
Consumption of fast food Percentage of children (aged 2-14 years) who ate fast food at least once in the past week (New Zealand Health Survey)
Consumption of sugary drinks Percentage of children (aged 2-14 years) who had fizzy drink three or more times in the past week (New Zealand Health Survey)
Fruit and vegetable intake Percentage of children (aged 2-14 years) who eat at least two servings of fruit each day and who meet New Zealand’s age-specific vegetable intake guidelines (New Zealand Health Survey)
Children’s environments support physical activity and healthy eating
Indicator Measure
Awareness of the Health Star Rating system Percentage of grocery shoppers who recognise, understand and use the Health Star Rating system (Health Star Rating Monitoring and Evaluation report, Colmar Brunton).
Active transport to and from school Percentage of children (aged 5-14 years) who usually use an active mode of transport, such as walking, biking or skating to get to and from school (New Zealand Health Survey).
Use of a bike Percentage of children (aged 5-17 years) who have ridden a bike in the last week for sport, exercise or fun and the average number of hours they spent riding a bike (Active New Zealand Survey).
Water in schools This measure is still under development.
More children have improved health outcomes
Indicator Measure
Body mass index Percentage of children (aged 2-14 years) with a body mass index that indicates they are thin, a healthy weight, overweight or obese.
Gestational diabetes Percentage of births where the mother had gestational diabetes (National Maternity Collection).
Raising Healthy Kids health target Percentage of obese children identified in the B4 School Check programme who were offered a referral to a health professional for clinical assessment and family-based nutrition, activity and lifestyle intervention (B4 School Check database, Ministry of Health)
Birth weight Percentage of babies whose birth weight (kg) was extremely low, very low, low, normal or high (Report on Maternity, Ministry of Health)

Short-term outcomes

  • Capability built across sectors to promote healthy lifestyle choices in food and nutrition and physical activity    
  • Strong sustainable relationships across communities and the wider sector developed    
  • Raised community knowledge about the benefits of physical activity and nutrition    
  • Guidelines implemented across sectors    
  • Environments/settings that make healthy eating and physical activity the norm    
  • Industry commits to providing foods and non-alcoholic beverages that contribute to a healthy diet and reduce rates of childhood obesity


  • Develop guidance and support for the promotion of good nutrition, healthy diets and physical activity for prospective parents, before conception and during pregnancy    
  • Promote healthy school environments that improve health and nutrition literacy and physical activity    
  • Provide guidance on and support for healthy diet, sleep, and physical activity in early childhood    
  • Provide guidance and support for weight management for children and young people    
  • Implement programmes that promote physical activity and reduce sedentary behaviours in children and young people

Childhood obesity prevention initiatives

Multiple pathways to achieve outcomes.  See the childhood obesity plan.


  • Workforce    
  • Funding    
  • Collaborative relationships    
  • Leadership    
  • Information
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