Table 3.

Delivery and acceptability of the 10 selected school-based Generation Heathy Kids intervention components, according to the Key Performance Indicators

Intervention component	Delivery		Acceptability
	Pre-specified criteria for successful delivery	Fidelity: To which degree was the intervention component delivered as intended? (Data)	Did a minimum of 85% find the intervention component acceptable and/or satisfactory? (Data)
Family evening across the themes of food & nutrition, physical activity, and screen media habits	• One family evening to be conducted • The workshop should contain sessions focusing on each of the three themes food & nutrition, physical activity, and screen media habits. Approx. 30 min should be allocated for each theme	Fully delivered as intended • One family evening was conducted • The family evening included 30 min sessions on each of the three intended themes (Counts and registration by the research group)	Parents	Yes (Counts, evaluation sheets for parents, and observations)
Midmorning snack at school	• A midmorning snack should be delivered to the children four days a week throughout the study period	To a low degree delivered as intended • Not delivered throughout the study period • Adaptations made by school staff compromised the healthiness of the midmorning snack (Registration by the research group and observations)	Children	No (School staff questionnaire, counts, and observations)
Cold, pre-prepared do-it-yourself lunch at school	• A lunch meal should be delivered to the children four days a week throughout the study period • The school staff should adhere to the study’s health pedagogical principles during the lunch break	To some degree delivered as intended • Delivered as frequently and long as intended • Most school staff members adhered to the health pedagogical principles (Registration by the research group, observations, and focus group interviews with school staff)	Children	Conflicting findings (School staff questionnaire, school staff logbooks, counts, focus group interviews with school staff, and observations)
			School staff – health pedagogical principles	No (School staff questionnaire and focus group interviews with school staff)
			School staff – practical tasks	Yes (School staff questionnaire)
Cold-water dispenser at school	• A cold-water dispenser should be installed and be available at the school throughout the study period • The cold-water dispenser should be maintained to ensure functionality	To a low degree delivered as intended • Installed at school and available throughout the study period • Lack of maintenance caused periods where the dispenser did not work (Registration by the research group and focus group interviews school staff)	Children	No (School staff questionnaire, counts, focus group interviews with school staff, and observations)
Reusable water bottle for each child	• A reusable water bottle should be handed out to all children in 1st and 2nd grade	Fully delivered as intended • A reusable water bottle was handed out to all children in 1st and 2nd grade (Registration by the research group)	Children	No (School staff questionnaire, counts, and observations)
Organized vigorous physical activity during school time (FIT FIRST 10)	• The scheduled 3 × 40 min FIT FIRST 10 sessions should be carried out each week throughout the study period • The school staff should follow the intervention manual for the FIT FIRST 10 sessions • The FIT FIRST 10 sessions should contain the planned level of high intensity physical activity	To some degree delivered as intended • Delivered as frequently as intended in some classes • Delivered almost as long as intended • Sessions often had a shorter duration than intended • The degree to which the school staff followed the FIT FIRST 10 manual varied • The intensity of the sessions varied (Registration by the research group, school staff questionnaire, observations, and focus group interviews with school staff)	Children	Yes (Counts, focus group interviews with school staff, and observations)a
			School staff	N/Ab
Packages of loose play and sports equipment for school recess	• The equipment should be accessible for the children during recess	To a low degree delivered as intended • Limited access to the equipment during recess (Registration by the research group, observations, and focus group interviews with school staff)	Children	No (School staff questionnaire and observations)
Screen media habits assignment at school	• The class responsible teachers should conduct the assignment ‘The Digital Barometer’ [In Danish: ‘Det Digitale Barometer’] with the children in their class	To some degree delivered as intended • ‘The Digital Barometer’ was conducted in some classes (Registration by the research group and focus group interviews with school staff)	Children	N/Ac
Inspiration sheets for parents on screen media habits and sleep	• Three inspiration sheets about sleep and screen media habits should be sent to the parents	Fully delivered as intended • Three inspiration sheets were sent to the parents (Registration by the research group)	Parents	N/Ad
Parent workshop on screen media habits	• One workshop to be conducted • The workshop should be centred around information and dialogue focusing on children’s screen media practices	Fully delivered as intended • One workshop was conducted • The workshop was centred around children’s screen media practices (Counts and registration by the research group)	Parents	Yes (Counts, evaluation sheet for parents, focus group interviews with school staff, and observations)

^aChildren’s acceptability of this intervention component was also assessed in the school staff questionnaire, but due to few and thus not representative responses to these items, these data are excluded from the analysis

^bNo quantitative data available. Acceptability of this intervention component was assessed in the school staff questionnaire, but due to few and thus not representative responses to these items, these data are excluded from the analysis

^cNo quantitative data available. The children’s acceptability of this component was only evaluated

^dData only collected with parent questionnaires (excluded from the analysis)