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. 2019 Jun 28;21(6):e12580. doi: 10.2196/12580

Table 3.

Pre- and postintervention comparisons of nutrient intakes, overall diet quality, Health-related Quality of Life Scores, and General Self-Efficacy scores.

Nutrient (units) Mean difference Wilks’ lambda (λ) F (df)a eta-squared (η²) P value

Intervention Control



Macronutrients and food components

Fat (% total calories) −5.1 −2.9 0.817 11.68 (1,53) 0.183 .001

Saturated fat (% total calories) −1.3 1.6 0.816 11.71 (1,53) 0.184 .001

Omega 3 (gb) −0.4 0.4 1.000 0.02 (1,53) 0.000 .88

Omega 3 (% total calories) 0.1 0.3 0.964 1.93 (1,53) 0.036 .17

Omega 6 (g) −2.2 −3.4 0.688 23.58 (1,53) 0.312 <.001

Omega 6 (% total calories) 0.8 0.6 0.908 5.26 (1,53) 0.092 .03

Sodium (mgc) −1537.9 −398.6 0.846 9.47 (1,53) 0.150 .003d

Sugar (g) 1.8 −0.1 0.979 1.11 (1,53) 0.021 .30

Fiber (g) −1.2 −1.2 0.000 9.47 (1,53) 0.000 .99
Vitamins and minerals

Vitamin B6 (mg) −1.6 0.4 0.989 0.58 (1,53) 0.011 .45

Vitamin B9 (mcg DFEe) −89.1 −57.0 0.950 2.72 (1,53) 0.050 .11

Vitamin B12 (mcgf) -0.4 −1.7 0.883 6.90 (1,53) 0.117 .011

Vitamin D (IUg) 1.2 2.2 1.000 0.01 (1,53) 0.000 .92

Calcium (mg) −176.7 −121.9 0.899 5.81 (1,53) 0.101 .02
Diet quality

Healthy Eating Index- Canadian 26.5 6.9 0.655 27.34 (1,53) 0.345 <.001d
Other outcomes

Health-related quality of life short form-8 7.0 5.3 0.914 4.92 (1,53) 0.086 .03

General Self-Efficacy 0.9 0.1 0.975 0.01 (1,53) 0.001 .27

aExact statistic.

bg: gram.

cmg: milligram.

dSignificant interactions of time by groups.

eDFE: dietary folate equivalent.

fmcg: microgram.

gIU: international unit.