Table 1.

Instrumentation/Survey.

Variable	Number of Questions	Score Range	Meaning	Source
Demographics	10	N/A	N/A	N/A
Beliefs	6	6-30	The higher the score, the more accurate their beliefs are	Lea et al (2006)
Motivations	6	6-30	The higher the score, the more motivated they are	Lea et al (2006)
Barriers	6	6-30	The higher the score, the more barriers they face	Lea et al (2006) Lessem et al (2020)
Self-efficacy	6	6-24	The higher the score, the better their self-efficacy	Lessem (2018)
Promotional health services	Ranking	N/A	N/A	https://uhs.berkeley.edu/home
Self-perceived mental health status	10	N/A	The lower the sum, the better their mental health status is	Rand 36-Item Short Form Survey (RAND, 2017) Lessem (2018)
Outcome: Intention to adopt a more plant-based diet	3	3-15	The higher the score, the more likely they are to adopt a plant-based diet	Duchene and Jackson (2019) Havermans et al (2021) Pandey et al (2021)