<prompt> Translate the following text to EnglishUfuatiliaji ulipunguzwa kwa miezi sita, kwa hivyo utafiti huu ungekuwa umekosa kurudi kwa msingi katika hatua za baadaye za wakati, na kiwango cha kukataa kilikuwa cha juu katika utafiti huu.  <response>: Follow-up was limited to six months, so this study would have missed any rebound back to baseline at later time points, and the refusal rate was rather high in this study. 