Table 3 Description of variables, purpose of measure, instruments, and when data will be collected

Infant

SO

Antropo-metric measures

Weight and height

Self-reported, but measured at the scheduled visits to the health centre

At 6 and 12 months

(24 and 48 months^a)

SO, IC

Food intake

Food variance

Daily food intake, breastfeeding, introduction of solid food

FFQ based on FFQ from Norwegian nationwide diet surveys among 6 and 12 months old children [13, 56] and the Norwegian MoBa-study [51]

At 6 and 12 months

(24 and 48 months^a)

SO, IC

Child eating behaviour

Report of satiety-responsiveness, fussiness, food enjoyment, emotional over−/under eating

BEBQ [57, 58]

CEBQ [59, 60]

CEBQ

At 6 months

At 12 months

(24 and 48 months^a)

SC

Infant tempera-ment

Infant difficultness as perceived by caregiver

Fussy/difficult subscale of the Infant Characteristics Questionnaire [61, 62]

At 6 and 12 months

SO, IC

Food preferences

Rating of child’s preferences for listed food and beverages

Food preferences questionnaire developed for this study’s purpose

(At 24 and 48 months^a)

SO, SC

Child behaviour

Internalizing and externalizing behaviours

Child Behaviour CheckList (CBCL) [63–65]

(At 24 and 48 months^a)

Parent

SC

Antropo-metric measures

Weight and height of parent

Self-reported

At 6 and 12 months

(24 and 48 months^a)

SC

Food intake

Food variance

Frequency of intake of indicator foods for healthy and unhealthy food.

FFQ developed for this study’s purpose, based on the Norwegian MoBa-study [51]

At 6 and 12 months

(24 and 48 months^a)

SO, IC

Food neophobia

Ratings of the parent’s courage to taste new foods and flavours

The food neophobia scale [66]

At 6 months

SC

Parental eating behaviour

Report of satiety-responsiveness, fussiness, food enjoyment, emotional over−/under eating

Adult Eating Behaviour Questionnaire [67]

(AEBQ)

At 12 months

(24 and 48 months^a)

SO, IC

Feeding style and feeding practices

Feeding attitudes, practices, perceptions/concern regarding weight, under/over-eating, infant cues

Infant Feeding Questionnaire [68, 69]

Child Feeding Questionnaire [70]

At 6 and 12 months

(24 and 48 months^a)

SO, IC

Feeding self efficacy

Parental self- efficacy in feeding situations

Five items from the Feeding Self-Efficacy Questionnaire [71, 72]

At 6 and 12 months

(24 and 48 months^a)

SO, IC

Parenting style

Parental discipline, routine, anxiety, nurturance and involvement

Infancy Parenting Styles Questionnaire [73]

At 6 and 12 months

SO, IC

Parenting style

Control-oriented parenting

The Parental Locus of Control Scale (PLOC), short version [74, 75]

At 12 months

(24 and 48 months^a)

SC

Parental personality traits and mental health

General self-efficacy

Negative Affectivity

Short versions of:

General Self-Efficacy Scale (GSE) [76, 77]

The (Hopkins) Symptoms Checklist (SCL-8) [76, 78, 79]

Edinburgh Postnatal Depression Scale (EPDS) [80, 81]

At 6 and 12 months

(24 and 48 months^a)

At 12 months