The construction health cohort is based on data from Bygghälsan, an industry-specific occupational health service for the Swedish construction industry. Building health started in 1968 and ended at the beginning of 1993. All connected people were offered regular health checks. Some of the results from these were saved in a register, from 1971 in computerized form. More than 389,000 individuals are included in the register. When Bygghälsan ceased to be occupational health care, the register was transferred to the Working Life Institute to be used for research. The Working Life Institute has been closed and the register is now managed by Umeå University.
