Exercise and life expectancy – Authors' reply

We thank Lennert Veerman and colleagues for giving us the opportunity to clarify the relation between summary mortality ratios and extended life expectancy. There are several reasons why these are not totally comparable. Veerman and colleagues applied our adjusted mortality ratios to estimate the differences in life expectancy, whereas in fact they should have used the unadjusted ratios. As a result, they have underestimated the true differences...