Fig. 2. Demographic factors and study sample descriptives of sub-studies 1, 2, and 3.
On average, women were more likely to choose a plant-based meal (app study: X² = 731.4, p < 10−10, female = 58%, diverse = 45.3%, male =;37.3%; sub-study 2: female = 65%, diverse = 2%, male = 33%; sub-study 3: allocation was randomized). Both females and diverse gender reported more than twice as often predominantly vegan/vegetarian dietary habits compared to males in the app study (X² = 1266, p < 10−10, female = 40.4%, diverse = 54.8%, male = 16.5%). In sub-study 2, neither body mass index (BMI), income or general well-being differed across meal categories (pall > 0.26). Omnivorous dieters choosing a plant-based meal were characterized by significantly higher habitual fiber intake (22 ± 11 vs. 18 ± 9 g fiber/day, p < 0.05) and marginally higher scores for cognitive restraint and hunger in the TFEQ subscales (p < 0.05) compared to those choosing animal-based meals (Table 1). No differences in personality traits or general well-being were found. Respective differences were not significant for the randomized allocation samples in sub-study 3. Images from Flaticon.com were used: Freepik (smartphone, diet, water, network, eat, clock, broccoli, tofu, peas, chickpea, soy, vegan, sausage, chop, food), Smashicons (brain), DinosoftLabs (chicken leg), surgeon (seafood).