Relationship between Stool Form and Quality of Life in Patients with Chronic Constipation: An Internet Questionnaire
Hidenori Ohkubo1, Tsutomu Yoshihara1, Noboru Misawa1
1Division of Hepatology and Gastroenterology, Yokohama City University School of Medicine, Yokohama, Japan.
Introduction:
Chronic constipation (CC) is a highly prevalent functional bowel disorder with low treatment satisfaction and impaired quality of life (QOL). However, physicians tend to emphasize only "stool frequency," and relationship between "stool form" and QOL remains unclear. In this study, we aimed to investigate the actual situation of CC treatment in Japan and elucidate the relationship between stool form and QOL in patients with CC.
Methods:
We conducted an online questionnaire survey in September 2018 targeting Japanese adult patients already diagnosed with CC and taking prescribed drugs. Assessments included the type of drug treatment, treatment duration, frequency of drug use, frequency of bowel movements (BMs), Bristol Stool Form Scale (BSFS), and Japanese version of the Patient Assessment of Constipation QOL (PAC-QOL) scores. Relationship between BSFS and Japanese PAC-QOL scores was analyzed, and most important factor that influences QOL was investigated.
Results:
A total of 614 subjects were enrolled. Of these, 398 (64.8%) regularly used magnesium oxide and 162 (26.4%) used stimulant laxative, especially 81 (50.0%) used stimulant laxative "everyday." Mean score of the PAC-QOL was 1.29 ± 0.74, and the lowest score (highest QOL) of 0.94 ± 0.61 was observed in BSFS type 4. Significant difference was seen between BSFS type 4 and all the other types except type 7. Multivariate analysis revealed that normal stool form (BSFS type 4) and BMs ≥3/week are strongly related to decreases of PAC-COL score. In BSFS types 6 and 7, 36% of individuals experienced self-discontinuation of prescribed drugs and 53% self-reduced drug intake because of excessive effects.
Conclusions:
Stool form and frequency of BMs are relevant to QOL, especially normal stool form (BSFS type 4) is important for improving the QOL in patients with constipation. Physicians should focus on "stool form" and reconsider the prescription especially in BSFS types 6-7 patients.
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