MS risk increased in nurse anaesthetists?

In a previous study, based on analysis of survey results, a team of Swedish researchers found that nurse anaesthetists were at an increased risk of MS compared with other nurses. This team recently followed up on these results with a different type of analysis that compared government records to see if nurse anaesthetists (as reported on the national census) had a higher number of MS-related hospital and disability claims than other professions. The analysis showed that nurse anaesthetists had a significantly higher incidence of MS compared with teachers, but a non-significantly higher incidence compared with other nurses. The authors speculate that exposure to anaesthesia (which contains organic solvents) may be responsible for this observed increase in risk.