Table 1.

Baseline characteristics

Variables	Early flexible sigmoidoscopy ≤ 72 hours (n = 87)	Delayed flexible sigmoidoscopy > 72 hours (n = 25)	P-value
Patient characteristics
Age (years), mean (SD)	39.1 (16.5)	39.8 (18.4)	.84
Female, n (%)	39 (44.8)	12 (48)	.78
BMI, mean (SD)	26.9 (6.7)	25.3 (6.5)	.27
Current smoker, n (%)	3 (3.5)	3 (12)	.08
On IMM on admission, n (%)	3 (3.5)	3 (12)	.09
Biologic-naïve, n (%)	55 (63.2)	16 (64)	.94
Prior anti-TNF, n (%)	26 (29.9)	8 (32)	.84
On chronic opioids, n (%)	7 (8.1)	1 (4)	.49
On oral corticosteroids at time of admission, n (%)	44 (50.6)	12 (48)	.82
Disease activity
Pancolitis, n (%)	60 (68.9)	20 (80)	.28
Presence of extraintestinal manifestations (EIM), n (%)	8 (9.2)	1 (4)	.39
Concomitant CMV infection, n (%)	2 (2.3)	1 (4)	.17
Concomitant C. difficile infection, n (%)	3 (3.5)	1 (4)	.89
C-reactive protein md/dL at presentation, mean (SD)a	72.8 (71.5)	98.8 (72.7)	.14
Albumin g/dL at presentation, mean (SD)b	3.4 (0.71)	3.2 (0.67)	.13
Mayo UC 3 endoscopic subscore, n (%)	60 (68.9)	18 (72)	.67

Abbreviations: anti-TNF, anti-tumor necrosis factor; BMI, body mass index; C. difficile, Clostridioides difficile; CMV, cytomegalovirus; IMM, immunomodulator; SD, standard deviation; UC, ulcerative colitis.

^aData missing on 16 patients.

^bData missing on 11 patients.