Cumulative incidence of chronic constipation: a population‐based study 1988–2003

To estimate the cumulative incidence of chronic constipation and evaluate potential risk factors.In previous cross-sectional studies in 1988, random samples of Olmsted County, MN residents were mailed valid gastrointestinal symptoms surveys. A similar survey was mailed in 2003 to all the remaining eligible subjects who had been mailed to previously. An incident case of chronic constipation was defined as no reported constipation or irritable...