Table 1

Study characteristics—prospectively enrolled cohorts

Study	Setting	Site	Design	Patients with IBD (n)	IBD type	SpA criteria	SpA evaluation	Rheum input
Al-Jarallah et al 201233	Clinic	SC	CS	125	CD/UC	–	Exam—other	No
Al-Jarallah et al 201334	Clinic	SC	CS	130	CD/UC	–	Exam—other	No
Bandinelli et al 201124	Clinic	SC	CS	121	CD/UC	–	Exam—rheum	Yes
Bandinelli et al 201435	Clinic	SC	Long	81	CD/UC	mNY	Exam—rheum	Yes
Bandyopadhyay et al 201536	Clinic	SC	CS	120	CD/UC	ASAS (A)	Exam—rheum	Yes
Barreiro-de Acosta et al 200737	Clinic	SC	CS	173	CD	–	Exam—rheum	Yes
Bertolini et al 202038	Clinic	MC	CS	148	CD/UC	ASAS (A/P)	Exam—rheum	Yes
Beslek et al 200939	Clinic	SC	CS	122	CD/UC	mNY, ESSG	Exam—rheum	Yes
Christodoulou et al 200240	Clinic	SC	CS	256	CD/UC	–	Self-report, chart	No
D’Inca et al 200941	Clinic	MC	Long	651	CD/UC	ESSG, mNY	Exam—rheum	Yes
De Vlam et al 200042	Clinic	SC	CS	103	CD/UC	ESSG, mNY	Exam—rheum	Yes
Ditisheim 201543	Pop	MC	CS	2401	CD/UC	ASAS (P)	Self-report	Yes
Dmowska-Chalaba et al 201544	Clinic	SC	CS	51	CD/UC	ASAS (A/P)	Exam—other	Yes
Duricova et al 201745	Pop	MC	CS	628	UC	–	Exam—other	No
Fatemi et al 201646	Clinic	SC	CS	273	CD/UC	mNY	Exam—rheum	Yes
Gotler et al 201547	Clinic	SC	CS	286	CD/UC	ASAS (A)	Self-report, chart	Yes
Hammoudeh et al 201848	Clinic	SC	CS	127	CD/UC	ASAS (A/P)	Exam—rheum	Yes
Hiller et al 201949	Pop	MC	Long	3298	CD/UC	–	Exam—other	Yes
Isene et al 201550	Pop	MC	Long	1145	CD/UC	–	Exam—other	Yes
Kamo 201551	Clinic	SC	CS	137	CD/UC	–	Self-report	No
Karmiris et al 201652	Clinic	MC	CS	1860	CD/UC	–	Exam—rheum	Yes
Lakatos et al 200353	Clinic	SC	Long	873	CD/UC	–	Exam—rheum	Yes
Lanna et al 200854	Clinic	SC	CS	130	CD/UC	mNY	Exam—rheum	Yes
Luchetti et al 201955	Clinic	SC	Long	262	CD/UC	ASAS (A/P)	Exam—rheum	Yes
Mocelin et al 201556	Clinic	SC	CS	100	CD	ASAS (A/P)	Chart	Yes
Orchard et al 200957	Clinic	SC	CS	44	CD	mNY*	Exam—other	No
Ossum et al 2018 (A)13	Pop	MC	CS	470	CD/UC	ASAS (A), mNY	Self-report†	Yes
Ossum et al 2018 (P)14	Pop	MC	CS	470	CD/UC	ASAS (P)	Self-report†	Yes
Palm et al 200115	Pop	MC	CS	521	CD/UC	mNY	Exam—rheum	Yes
Palm et al 200216	Pop	MC	CS	406	CD/UC	mNY, ESSG	Exam—rheum	Yes
Peeters, 200858	Clinic	MC	CS	251	CD	mNY	Chart	Yes
Picchianti-Diamanti et al 202059	Clinic	MC	CS	347	CD/UC	ASAS (A/P)	Exam—rheum	Yes
Pokharna et al 200460	Clinic	SC	CS	46	UC	mNY	Exam—other	No
Queiro et al 200061	Clinic	SC	Long	62	CD/UC	Amor, ESSG, mNY	Exam—other	Yes
Ricart et al 200462	Clinic	SC	CS	243	CD/UC	–	Self-report	No
Rovisco et al 201663	Clinic	SC	CS	76	CD/UC	ASAS (A/P)	Exam—rheum	Yes
Sahli et al 201864	Clinic	SC	CS	64	CD/UC	ASAS (A), Amor	Exam—rheum	Yes
Salvarani et al 200165	Clinic	MC	CS	160	CD/UC	mNY, ESSG	Exam—rheum	Yes
Steer et al 200366	Clinic	SC	CS	134	CD	mNY	Exam—other	Yes
Stolwijk et al 201367	Clinic	SC	CS	350	CD/UC	–	Self-report, chart	Yes
Subramaniam et al 201568	Clinic	SC	CS	140	CD/UC	ASAS (A/P)	Self-report, chart	Yes
Turkcapar et al 200669	Clinic	SC	CS	162	CD/UC	mNY, ESSG	Exam—rheum	Yes
Van Erp et al 201670	Clinic	SC	Long	255	CD/UC	ASAS (A/P), Amor, ESSG, mNY	Exam—other	Yes
Vavricka et al 2011	Pop	MC	CS	950	CD/UC	–	Physician survey	No
Yuksel et al 201171	Clinic	SC	CS	357	CD/UC	–	Exam—rheum	Yes

*Adapted for MRI.
†Used rheumatologist physical examination from 5-year follow-up study.
A, axial; ASAS, Assessment of Spondyloarthritis International Society; CD, Crohn’s disease; CS, cross-sectional; ESSG, European Spondyloarthropathy Study Group; IBD, inflammatory bowel disease; Long, longitudinal; MC, multicentre; mNY, modified New York criteria; P, peripheral; Pop, population; Rheum, rheumatologist; SC, single centre; SpA, spondyloarthritis; UC, ulcerative colitis.