FIGURE 2.

Percentage contribution of plant food components¹ to total protein intake of adults (N = 9564) by quintile of animal protein (AP) intake².

^a,b,c,d,eResults with different superscripts are significantly different, P <0.001.

¹Does not include protein from Miscellaneous foods including baked goods and alcoholic beverages so percentages from animal and plant sources may not add to 100%.

²Group comparisons were made by t-tests in a regression model adjusting for age, sex, income, race/ethnicity, smoking, and weight status.