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.
Six month follow up was not sufficient time.
mnli hypothesis: Six month follow up was not sufficient time. premise: 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.