 1. The global burden of disease, GBD, study assesses health losses from diseases, injuries, and risk factors using disability-adjusted life years, which need a set of disability weights to quantify health levels associated with non-fatal outcomes. 2. The objective of this study was to estimate disability weights for the GBD 2013 study. 3. To achieve this, we analyzed data from new web-based surveys of participants aged 18 to 65 years, completed in four European countries, Hungary, Italy, the Netherlands, and Sweden, between September 23, 2013, and November 11, 2013, combined with data previously collected in the GBD 2010 disability weights measurement study. 4. We used paired comparison questions for which respondents considered two hypothetical individuals with different health states and specified which person they deemed healthier than the other. These surveys covered 183 health states pertinent to. This article was authored by Professor Joshua A. Salomon, PhD, Juanita A. Harzma, PhD, Professor Adrian Davis, PhD, and others. We are article.tv, links in the description below.