Retrospective Study
Copyright ©The Author(s) 2022.
World J Gastroenterol. Jun 7, 2022; 28(21): 2334-2349
Published online Jun 7, 2022. doi: 10.3748/wjg.v28.i21.2334
Table 2 Sociodemographic and symptomatic characteristics of the study participants

Total
Centers
Germany
Sweden
United States
United Kingdom
Ireland
n100.0 (623)45.1 (281)18.3 (114)19.6 (122)12.4 (77)4.7 (29)
Age41.7 ± 16.1 (18, 91)40.7 ± 16.4 (18, 88)33.7 ± 11.8 (18, 60)54.9 ± 14.6 (25, 91)40.8 ± 11.6 (18, 70)30.3 ± 8.6 (19, 51)
Sex
Female69.5 (433)63.3 (178)69.3 (79)77.9 (95)72.7 (56)86.2 (25)
IBS subtypes
IBS-C14.1 (87)8.9 (25)12.3 (14)36.7 (44)013.8 (4)
IBS-D41.7 (258)43.4 (122)19.6 (22)28.3 (34)100.0 (77)10.3 (3)
IBS-M42.5 (263)45.6 (128)67.0 (75)31.7 (38)075.9 (22)
IBS-U11.8 (11)2.1 (6)0.9 (1)3.3 (4)00
Depressive symptoms-9.4 ± 5.925.2 ± 3.5413.2 ± 9.655.9 ± 4.044.3 ± 3.24
Anxiety symptoms-7.7 ± 4.838.3 ± 4.5414.6 ± 9.769.6 ± 4.647.8 ± 4.54
Symptom severity-280.3 ± 90.77297.3 ± 100.5743.2 ± 16.28--
Somatization symptoms914.8±6.316.2 ± 7.313.3 ± 4.713.8 ± 5.0--

  • Citation: Berens S, Dong Y, Fritz N, Walstab J, D'Amato M, Zheng T, Wahl V, Boekstegers F, Bermejo JL, Martinez C, Schmitteckert S, Clevers E, Engel F, Gauss A, Herzog W, Spiller R, Goebel-Stengel M, Mönnikes H, Andresen V, Thomas F, Keller J, Pehl C, Stein-Thöringer C, Clarke G, Dinan TG, Quigley EM, Sayuk G, Simrén M, Tesarz J, Rappold G, van Oudenhove L, Schaefert R, Niesler B. Serotonin type 3 receptor subunit gene polymorphisms associated with psychosomatic symptoms in irritable bowel syndrome: A multicenter retrospective study. World J Gastroenterol 2022; 28(21): 2334-2349
  • URL: https://www.wjgnet.com/1007-9327/full/v28/i21/2334.htm
  • DOI: https://dx.doi.org/10.3748/wjg.v28.i21.2334