I still think a 19% BF rate at 6 months (which is what it now is) is still appallingly low, seeing as its what, 3-4% of women who biologically cannot breastfeed. That means two things; either, it's a choice, or there is a lack of support and information. Either way, studies like this serve to educate those 15-16% that are not breastfeeding at 6 months, for reasons that are not physical.
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I think you should read what you have said. Apart from your calculations being incorrect, it is very simplistic and patronising.