WP Leader: PSSJD; Dr Josep M. Haro.
A single harmonised dataset will be generated to include the 20 prospective studies considered in this proposal. In order to create a common data set for analysis, the first task will be to map variables across all the datasets: a core set of variables will be identified in each survey and they will be categorised in different domains and response options remapped to account for differences within surveys. The original questions, design of each survey and characteristics of the sample will be provided as metadata. Additional variables, including health-related outcomes and their determinants, will be created and added to the harmonised dataset. This will also include ecological variables as needed to account for social determinants of health.