If you want to reduce the probability of divorce, marry in your late 20s.
But the important thing, for Wolfinger, is that "we do know beyond a shadow of a doubt that people who marry in their thirties are now at greater risk of divorce than are people who wed in their late twenties. This is a new development." And it will take some further research to suss out what this means for the demographics of marriage going forward.
Here are the data, including confidence intervals!!!