Table 1:

Depicts the thirteen full-text publications included in Overview of de novo Crohn’s disease Incidence. Full publications included in Overview of de novo Crohn’s disease Incidence

Study Authors	Publication Year	Study Period	Number of IPAA Patients in Studies	Number of De novo CD	De novo CD Incidence in %
Goldstein et al. [27]	1997	1981–1995	74	8	10.8
Peyregne et al. [28]	2000	1985–1997	43	4	9.3
Rossi et al. [29]	2002	1989–2000	68	4	5.9
Melton et al. [30]	2010	1983–2007	2814	87	3.1
Haveran et al. [31]	2011	1990–2009	382	32	8.3
Coukos et al. [32]	2012	2006–2010	142	21	14.8
Tyler et al. [33]	2012	N/A-2007	399	50	12.5
Ahmed et al. [8]	2016	1992–2014	199	42	21
Zaghiyan et al. [15]	2016	1997–2007	237	40	16.9
Diederen et al. [34]	2017	2000–2015	303	14	4.6
Lightner et al. [16]	2017	1982–2016	Unreported	35	N/A
Yanai et al. [35]	2017	1981–2013	253	54	21.3
Shamah et al. [26]	2018	1960–2015	128	16	12.5
Total	1997–2018	58 Years	5042	407	3.1–21.3% (mean 11.75)