Table 4.

Potential risk factor for relapse after IN discontinuation.

	Relapse within a year (N = 50)	More than 1-year remission (N = 22)	Univariate analyses (P value)	Multivariate analyses (P value)
Age at diagnosis, years; mean (± SD)	29.2 (± 15.1)	25.9 (± 11.2)	0.259
Disease duration, years; mean (± SD)	8.4 (± 7.8)	8.1 (± 6.8)	0.855
Extent of disease (extensive/left-side proctitis)	27/23 (54%/46%)	15/7 (68.1%/31.8%)	0.261	0.318
Duratioin of IN use, week; mean (± SD)	29 (± 41)	21.4 (± 11.2)	0.497	0.983
Amount of IN used, g; mean (± SD)	223 (± 230)	188 (± 105)	0.836
Previous corticosteroid use	37 (74%)	13 (59.0%)	0.373	0.108
Biologic naive	30 (60%)	13 (59.0%)	0.771	0.236
Albumin (mg/dL) at IN discontinuation	4.49 (± 0.42)/13.4%	4.54 (± 0.31)/10.5%	0.366
Hemoglobin (g/dL) at IN discontinuation
Male	13.4 (± 1.55)	14.4 (± 1.63)	0.107
Female	12.4 (± 1.62)	12.8 (± 0.74)	0.152

Data are presented as mean (± SD) and number (percentage).

IN indigo naturalis, SD standard deviation.