Pat Bucknell wrote: The speaker said that post partum >depression occurs in 10-15% of new mothers or one in about every >1000 births(more than I expected). Pat, I'm confused. 10-15% means 10 to 15 out of every 100 mothers. 1 in a thousand births would be .001, not .10-.15 Please explain. ---------------------------------------------------------------------------- ------- Katherine A. Dettwyler, Ph.D. email: [log in to unmask] Anthropology Department phone: (409) 845-5256 Texas A&M University fax: (409) 845-4070 College Station, TX 77843-4352