Our Core Outcomes

Click on each core outcome below to explore its expanded definition.

Breastfeeding and formula feeding 

Duration breastfeeding from mother 

The length of time mothers breastfeeds their infants. This can include the length of time mothers exclusively breastfed their infants or the length of time before mothers ceased all breastfeeding.

Duration of breastfeeding only 

Feeding the infant only breast milk, without introducing solids or formula. 

Feeding method 

The method by which the infant is fed. This can include single feeding approaches or a combination of feeding approaches. 

Amount/volume formula consumed 

The quantity of formula milk consumed, either per feed or per day. 

Type of formula fed to infant 

The type of formula provided to infants. (e.g. early baby, hungry baby).

Mother’s breastfeeding self-efficacy 

How capable the mother feels about her ability to breastfeed. 


Introduction of solid foods 

Infant’s age when solids were first introduced 

The infant’s age when solids were introduced to the diet. Solids are considered any food or liquid substance, other than breast milk or formula milk. 


Parent/Caregiver knowledge and beliefs

Knowing what foods should be offered/avoided 

Parent/Caregiver knowledge of what foods should be offered to infants and what foods should be avoided during early feeding. 

Knowledge about how to offer solid foods 

Parent/Caregiver knowledge of the appropriate ways to feed infants complimentary foods. 


Feeding practices and styles 

Pressuring the child to eat 

Pressuring or cajoling the child to eat more at mealtimes

Parent/Caregiver modelling of eating behaviours 

Parent/Caregivers acting as models of eating that children learn to emulate:

  • Parent/caregivers who engage in healthy appropriate eating behaviours serve as positive models
  • Parent/caregivers who engage in unhealthy eating behaviours serve as negative models
Responsive infant feeding 

Infant feeding in which the parent/caregiver is aware of and responds in a timely and appropriate manner to infant cues and needs. 


Practical feeding 

Child self-feeding or assisted feeding 

Whether the child self-feeds (finger foods or spoon use) or is assisted in feeding by the parent/caregiver (spoon fed). This relates to all feeding occasions rather than just introduction of solids. 


Food environment 

Feeding environment 

The environment in which feeding takes place. This includes, but is not limited to, communication with the infant, sitting down to eat with the infant, and turning off the television during feeding

Offering healthy foods

Availability and provision of healthy foods to infant


Dietary intake

Types of food consumed

Relates to the different types of foodstuffs infants consume. This can include ever feeding, and/or the quantity of foods consumed, ranging from fruits and vegetables to sweet and savoury snacks. 

Portion size 

The size or amount of food provided to infants 

Offering age-appropriate foods and beverages 

Whether the foods and beverages provided to infants are developmentally appropriate 

Infant eating ready-made food 

Infant consumption of commercial baby food; this includes pre-packaged, ready-made, or shop-bought foods. These foods can include cereals, fruit, vegetables, fish, meat, sweets and desserts. 

Infant eating homemade food 

Infant consumption of food prepared by parent/caregiver. This can include the type of food prepared by parent/caregiver for infant. 

Type of ‘other drinks’ consumed 

Infant consumption of a range of drinks other than breastmilk and infant formula. These include water, cow’s milk and alternatives, sugar sweetened beverages, herbal drinks, tea/coffee and warm drinks (other than tea or coffee) 


Parent/Caregiver perceptions of infant behaviour and preferences 

Parent/Caregiver perception of food preferences 

Perceptions of the infant’s liking of established or newly introduced foods 

Parent/Caregiver perception of infant satiety-responsiveness 

Perceptions of the infant’s ability to regulate their intake based on their own fullness 


Weight related outcomes 

Child weight 

Including infant’s weight, and weight for age and length

Weight gain over time 

The infant’s increase over time in weight

Body composition 

Proportion of fat, muscle, bone and water