Study 1
In Study 1, when smaller portions were served, daily energy intake was 235 kcal lower (95% CI: 134, 336) vs. larger portions. Higher SEP individuals ate 426 kcal more than lower SEP individuals (95% CI: 114, 739), but there was no evidence that SEP moderated the portion size effect, see Fig. Daily energy intake by socioeconomic position (SEP) and portion size condition for Study 1 (left) and Study 2 (right). Figure Legend. Boxplots with median (IQR), with means denoted by white diamonds