Nutritional epigenetics education improves diet and attitude of parents of children with autism or attention deficit/hyperactivity disorder

Table 7 Within group summary with key findings of t-test results showing changes in parental dietary intake within groups pre- vs post-intervention

Ultra-processed food, test group, pre vs post	Ultra-processed food, control group, pre vs post	Whole and/or organic food, test group, pre vs post	Whole and/or organic food, control group, pre vs post
P < 0.001	P > 0.05	P < 0.05	P > 0.05
t = -4.9109, df = 12	t = -1.3145, df = 12	t = -2.209, df = 16	t = 0.84563, df = 16
P-value = 0.0003592	P-value = 0.2132	P-value = 0.0421	P-value = 0.4102
Effect size = 1.36	Effect size = 0.36	Effect size = 0.54	Effect size = 0.21
Cohen’s d - large	Cohen’s d - small	Cohen’s d - medium	Cohen’s d - small
H0: Mean pre-intervention group = mean post intervention group	H0: Mean pre-intervention group = mean post intervention group	H0: Mean pre-intervention group = mean post intervention group	H0: Mean pre-intervention group = mean post intervention group
H1: Mean pre intervention group ≠ mean of post intervention group	H1: Mean pre intervention group ≠ mean of post intervention group	H1: Mean pre intervention group ≠ mean of post intervention group	H1: Mean pre intervention group ≠ mean of post intervention group
H0 rejected	H0 supported	H0 rejected	H0 supported
Significant difference between pre and post intervention for test group. Mean of test group was greater than the mean of the control group	No significant difference between pre and post intervention for control group	Significant difference between pre and post intervention for test group. Mean of the test group was greater than the mean of the control group	No significant difference between pre and post intervention for control group