Table 2.

 Sensitivity and specificity of defined cut offs for patient defined remission and regulatory definition of remission

Index	Cut off for remission	Sensitivity for patient defined remission	Specificity for patient defined remission	Sensitivity for regulatory remission	Specificity for regulatory remission
UCDAI	<2.5	0.89	0.82	0.92	0.93
St Mark’s	<3.5	0.93	0.75	0.78	0.86
SCCAI	<2.5	0.82	0.79	0.89	0.86
Seo	<120	0.82	0.96	0.95	0.76
IBDQ	>205	0.82	0.81	0.78	0.66

UCDAI, ulcerative colitis disease activity index; SCCAI, simple clinical colitis activity index; IBDQ, inflammatory bowel disease quality of life index.