<prompt> Translate the following text to EnglishKatika utafiti uliofanywa kwa wanawake 826 asilimia 28 walianza kupata hedhi katika siku nne za mwezi mpya, huku asilimia 13 wakipata hedhi katika siku nyingine nne.  <response>: In a study of 826 women, 28 percent began menstruating during the four days around the new moon, whereas no more than 13 percent did so during any other four day period. 