Table 1.

Attrition table identifying patients included in the final study population

Group of patients	Number of patients	Number of stays
Initial population: with a primary diagnosis of constipation/constipation-related complication	2615	2694
Patients younger than 20 years	492	500
Adult patients (≥20 years)	2123	2194
With a diagnosis of colorectal cancer during the calendar year	15	15
With a diagnosis of ulcerative colitis during the calendar year	1	1
With a diagnosis of Crohn's disease during the calendar year	6	6
Adult patients with no organic cause of constipation	2101	2172
Patients receiving potentially constipation-inducing drugs during the calendar year (≈ drug-induced constipation)	560	598
Final eligible population: adult patients with idiopathic constipation	1541	1574