Deviation from macronutrient goal by follow-up visit. A - C: carbohydrate goal at 3, 6, and 12 months, respectively, in the low-carbohydrate group; D - F: Total fat goal at 3, 6, and 12 months, respectively, in the low-fat group; G - I: Saturated fat goal at 3, 6, and 12 months, respectively, in the low-fat group