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. 2018 Nov 22;43(6):794–802. doi: 10.1002/jpen.1467

Table 3.

Number of Patients Required to Detect Differences in Standardized Effect Sizes of Percentage of Dietary Reference Intake Met at Day 90 From Food Intake Alone in This Population

Nutrient Common SD Effect Size n Per Group
Dietary fiber (g) 19.7 0.49 68
Added sugars (% kcal) 3.98 0.47 73
Total fat (% kcal) 8.14 0.69 35
Linoleic acid (g) 50.9 0.34 137
Linolenic acid (g) 43.6 0.56 52
Calcium (mg) 30.5 0.78 27
Potassium (mg) 14.1 0.52 60
Vitamin E (mg) 31.5 0.82 25
Vitamin D (mcg) 20.9 0.71 32
Vitamin C (mg) 53.9 0.46 74
Thiamin (mg) 40.7 0.66 37
Riboflavin (mg) 64.4 0.88 22
Niacin (mg) 35.4 0.73 31
Vitamin B6 (mg) 36.1 0.60 45
Vitamin K (mcg) 162 0.14 802
Folate (mcg) 53.5 0.83 24