Table 1.
Outcome | Assessment Method | |||
Online Questionnaire | ||||
|
Demographics and health status | Self-report | ||
|
Vegetarian/vegan status | Self-report | ||
|
Dietary Habits | Dietary Habits Questionnaire | ||
|
Attitudes and motivations towards food choice | Rationalizing meat consumption: The 4Ns Questionnaire [19] | ||
|
The Food Choice Questionnaire [21] Ethical Food Choice Motives [18] |
|||
|
Dietarian Identity Questionnaire [20] | |||
School visit | ||||
|
Estimated usual dietary intake | Two 24-hour recalls, with adjustment of usual intake using MSMa | ||
|
Height | Stadiometer | ||
|
Weight | Body weight scales | ||
|
Ulna Length | Steel measuring tape | ||
Blood sample | ||||
|
Hemoglobin | Cyanide-free photometry | ||
|
Plasma ferritin | Immunoassay | ||
|
Soluble transferrin receptor | Immunoassay | ||
|
C-reactive protein | Immunoassay | ||
|
Alpha-glycoprotein | Immunoassay | ||
|
Zinc | ICP-MSb | ||
|
Selenium | ICP-MS | ||
|
Vitamin B12 | Electrochemiluminescence immunoassay | ||
|
Folate | Microbiological Assay | ||
Urine Sample | ||||
|
Iodine | ICP-MS | ||
Accelerometry | ||||
|
Average daily 24 h Activity | ActiGraph GT3x+, and accompanying wear time and sleep diary. | ||
|
|
Average daily sleep | ||
|
|
Average daily sedentary time | ||
|
|
Average daily light intensity activity | ||
|
|
Average daily moderate to vigorous intensity physical activity |
aMSM: Multiple source method
bICP-MS: Inductively couple plasma mass spectrometry