Obesity and food away from home: what drives the socioeconomic gradient in excess body weight? – German Institute of Development and Sustainability (IDOS) https://www.idos-research.de/externe-publikationen/article/obesity-and-food-away-from-home-what-drives-the-socioeconomic-gradient-in-excess-body-weight-1/
The study also finds that up to 15 percent of the socioeconomic gradient in obesity