Proportions of underweight (), overweight () and obese () v. log(GDPpC), and their linear trends (, underweight; , overweight; , obese), for the six countries. Data on older adults aged 50 years or over from the first wave of the WHO Study on global AGEing and adult health (SAGE) implemented between 2007 and 2010 (GDPpC, national gross domestic product (at purchasing power parity) per capita)