“You looked at the entire Swedish population?
“Exactly, aged between 20 to 55 — with a series of criteria. But the most important one was that they had to be in precarious employment.
“And when these Swedish workers went from precarious employment to standard employment, they lived longer? How do you do the analysis?
“We compare those that change from precarious to standard employment and those that do not change. Then we test the risk, then we follow them up for 12 years and we see who dies first. And then we see, oh yes, the ones that do not change to standard employment, they die faster and earlier than others. So, we can say that the risk of death is higher.”