>13 partners has lower divorce chance than 5-12 partners
I'm sensing a low sample size. Also, that chart doesn't specify if the partners were previous, but does limit the population to people who never remarried. In other words, single women are more likely to increment their partner counts. Which should be kind of obvious. And the odds of someone having been divorced in the past goes up with their age, so now we're at, "single women more likely to increment partner count as time goes on."
Maybe it is really pre-marriage partner count, but it isn't labeled as such. It's not a great chart.
>13 partners has lower divorce chance than 5-12 partners
I'm sensing a low sample size. Also, that chart doesn't specify if the partners were previous, but does limit the population to people who never remarried. In other words, single women are more likely to increment their partner counts. Which should be kind of obvious. And the odds of someone having been divorced in the past goes up with their age, so now we're at, "single women more likely to increment partner count as time goes on."
Maybe it is really pre-marriage partner count, but it isn't labeled as such. It's not a great chart.