From The Duh Files: Women who use ‘pull out’ birth control method at greater risk of unintended pregnancy

The link is here.  The "duh" doesn't mean that the topic isn't worth studying, by the way.  What if the study had found the reverse?  Then it would be plastered over everything! 

Thus, if we are going to want all research properly discussed, it's really important to also cover the studies which support the null hypothesis (a fancy way of saying that the new treatment was no better, that nothing exciting was established and so on).

So I'm glad to see the results, however "duh" they are, published in the popular media.