Nag A, Martin SA, Mladsi D, Olayinka-Amao O, Purser M, Vekaria RM. The humanistic and economic burden of chronic idiopathic constipation in the USA: a systematic literature review. Clin Exp Gastroenterol. 2020 Jul 16;(13):255-65. doi: 10.2147/CEG.S239205

BACKGROUND: Chronic idiopathic constipation (CIC) is a persistent, functional gastrointestinal disorder with an estimated prevalence of 16% in the USA; however, the humanistic and economic burden of CIC is poorly characterized. Aim: This systematic literature review aimed to assess the humanistic and economic burden of CIC in adults in the USA.

METHODS: Two systematic literature searches of English-language publications on the humanistic and economic burden of CIC in adults in the USA were conducted using electronic databases and other resources. Both searches included the terms “chronic idiopathic constipation” and “functional constipation”. Specific terms used in the search on humanistic burden included “quality of life”, “SF-36”, “SF-12”, and “PAC-QOL”; search terms for economic burden included “cost”, “resource use”, “absenteeism”, and “productivity”.

RESULTS: Overall, 16 relevant articles were identified. Health-related quality of life (HRQoL) appeared to be reduced in patients with CIC compared with controls and the general US population. Abdominal (r=0.33–0.49), stool (r=0.23–0.33), and rectal symptoms (r=0.53) appeared to be associated with reduced HRQoL. Direct outpatient costs were higher in patients with CIC than those without CIC (US$6,284 vs US$5,254). Patients with CIC and abdominal symptoms reported more days of disrupted productivity per month than those without abdominal symptoms (3.2 days vs 1.2 days).

CONCLUSION: The reduced HRQoL and increased costs associated with CIC indicate unmet therapeutic need in this disorder. Further research is required to better understand the humanistic and economic burden of CIC in the USA.

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