Instructions: Given a passage, construct a question on the basis of the information present in the passage. Construct the question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) it answer uses text phrases from the passage. Avoid creating questions that (i) can't be answered correctly without actually understanding the passage and (ii) uses the same words or phrases given in the passage.
Input: To determine the effects of supplemental fiber on plasma p-cresol, stool frequency, and quality of life (QoL) in chronic kidney disease (CKD) patients.', 'In a 12-week single-blind study, participants were provided with control muffins and supplements (5.5\xa0g sucrose/day) for 2\xa0weeks, muffins containing 10\xa0g/day pea hull fiber and control supplements for 4\xa0weeks, and muffins with 10\xa0g/day pea hull fiber and 15\xa0g/day inulin as a supplement for 6\xa0weeks.', 'Individuals with CKD (n\xa0=\xa013; 6 males, 7 females; aged 65\xa0±\xa03\xa0years; estimated glomerular filtration rate <50\xa0mL/minute/1.73(2)) completed the study.', 'Plasma p-cresol was determined by gas chromatography-mass spectrometry, stool frequency by 5-day journals, and QoL by the KDQOL-36™.', 'Plasma p-cresol decreased from 7.25\xa0±\xa01.74\xa0mg/L during week 1 to 5.82\xa0±\xa01.72\xa0mg/L during week 12 (P\xa0<\xa0.05), and in participants with high compliance (>70% inulin intake), from 6.71\xa0±\xa01.98\xa0mg/L to 4.22\xa0±\xa01.16\xa0mg/L (P\xa0<\xa0.05). Total fiber intake increased from 16.6\xa0±\xa01.7\xa0g/day during control to 26.5\xa0±\xa02.4\xa0g/day (P\xa0<\xa0.0001) with the added pea hull and to 34.5\xa0±\xa02.2\xa0g/day with pea hull and inulin (P\xa0<\xa0.0001). Stool frequency increased from 1.4\xa0±\xa00.2 stools/day during control to 1.9\xa0±\xa00.3 stools/day during both fiber periods (P\xa0<\xa0.05). No change in overall QoL was observed.
Output:
Does fiber supplementation lower plasma p-cresol in chronic kidney disease patients?