Actually Dr. Kuller and I did some work in the Women’s Health Initiative, we collected the data some time, actually 1995. It took a while to get the data analyzed. But these are 573 ladies. About 50% had no LBP in the previous month and 50% had LBP. The majority of the ladies who had back pain also had leg pain and ignore this group for the moment. It’s just I’d like to get a little too fancy for this. This is actually quite a substantial number. This is 30 some percent here, 35% had LBP and leg pain.