TABLE 6.

IBDSI-LF Total Score and Subscale Correlations With Other Patient- and Clinician-Reported Measures (N ≤ 264)

	IBDSI	Subscales
	Total	I	II	III	IV	V
MIBDI	0.67d	0.61d	0.59d	0.57d	0.27d	0.26d
HBIa	0.86d	0.79d	0.68d	0.70d	0.35d	0.48d
PTIb	0.85d	0.78d	0.77d	0.68d	0.26c	0.37d
IBDQ	–0.89d	–0.73d	–0.80d	–0.83d	–0.27d	–0.43d
IBDQ-BS	–0.89d	–0.80d	–0.83d	–0.70d	–0.31d	–0.42d
GGA	0.70d	0.72d	0.57d	0.58d	0.28d	0.21c
CPSS	0.50d	0.35d	0.45d	0.50d	0.20c	0.27d

Note. All correlations significant at P < 0.001. IBDSI-LF, Inflammatory Bowel Disease Symptom Inventory Long Form; Total, IBDSI total score; Factor I, Bowel Symptoms; Factor II, Abdominal Discomfort; Factor III, Fatigue; Factor IV, Bowel Complications; Factor V, Systemic Complications; MIBDI, MIBDI, Manitoba IBD Index, higher scores indicate more frequent symptoms; HBI, Harvey Bradshaw Clinical Index for Crohn’s disease, higher scores on the HBI indicate more frequent/severe symptoms; PTI, Powell-Tuck Clinical Index for ulcerative colitis, higher scores on the PTI indicate more frequent/severe symptoms; IBDQ, Inflammatory Bowel Disease Questionnaire, higher scores indicate higher quality of life; IBDQ-BS, Inflammatory Bowel Disease Questionnaire Bowel Symptoms subscale, higher scores indicate less difficulty with IBD symptoms; GGA, Gastroenterologist’s Global Assessment of Disease Severity; CPSS, Cohen’s Perceived Stress Scale–4 item short form.

_a n = 128; _b n = 118. _cP < 0.01; _dP < 0.001.