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Table 5 Subscales of TPB model toward use of vitamin enriched foods

From: Assessment of attitudes toward functional foods based on theory of planned behavior: validation of a questionnaire

variable Non-user user Test statistics (t-test) p-value
Mean ± SD Mean ± SD
Attitudes 3.69 ± 0.77 3.87 ± 0.69 −2.275 p < 0.023
Subjective norms 3.51 ± 0.73 3.75 ± 0.61 −3.378 p < 0.001
Perceived control 3.17 ± 0.64 3.25 ± 0.58 −1.230 p < 0.219