TABLE 2—

Postintervention Survey Results (Percentages) for Total Sample and by Residency: Harvard University, Cambridge, MA, 2014

Survey Question	Total Sample (n = 764), %	Other Residential Houses (n = 535), %	Full Intervention (n = 229), %
Consider nutrition information daily.	53	54	51
Check nutrition facts online or on mobile app daily.	9	9	9
Nutrition information affects food choices often or always.	62	64	57
Nutrition information affects beverage choices often or always.	68	70	64
Use the traffic-light labels every meal.	17	15	20
Use the traffic-light labels at least daily.	25	22	29
Use the traffic-light labels at least a few times a week.	47	37*	58*
Traffic-light labels were helpful.	59	59	60
Traffic-light labels were not helpful.	21	16*	25*
Traffic-light labels should continue to be used or no preference.	73	78	69
Labels were not as effective at semester’s end as when the labels were introduced.	21	13*	29*
Traffic-light labels change food selected.	48	47	49
Traffic-light labels change amount consumed.	36	38	34
Traffic-light labels change perceptions about the healthfulness of specific foods.	62	61	63
HEP stickers were helpful.	34	48*	22*
HEP stickers were not helpful.	32	18*	45*
HEP stickers should continue to be used or no preference.	77	89*	67*
HEP stickers change food selected.	14	22*	7*
HEP stickers change amount consumed.	17	28*	7*
HEP stickers change perceptions about the healthfulness of specific foods.	20	27*	13*

Note. The “Other Residential Houses” group refers to students who lived at houses that included minimal-intervention cafeterias, control cafeterias, and cafeterias in residential houses not part of the study. These students did not live where the labeling intervention took place, but they could have occasionally seen or heard about the interventions. HEP = healthy-eating plate.

^*P < .05 for difference within a subgroup.