Table 4. Comparison of immunotherapy responders and non-responders.

	Responders (n=17)	Non-responders (n=6)	p value
Demographics
Median age (range) at diagnosis	36 yrs (16-76)	53.5 yrs (20-72)	0.22
Clinical Features
Subacute onset	9 (53%)	1 (17%)	0.18
Personal/family Hx autoimmunity	10 (59%)	2 (33%)	0.34
Paraneoplastic AGID	3 (18%)	0 (0%)	0.54
Laboratory abnormalities
Antinuclear antibody	7 (41%)	3 (50%)	1.0
Neural specific autoantibody	12 (71%)	4 (67%)	1.0
Extra intestinal autonomic testing
Abnormalities	14 of 16 (88%)	5 of 5 (100%)	1.0
Post immunotherapy improvement	6 of 7 (86%)	1 of 3 (33%)	0.18
Immunotherapy Treatment
Median time from onset to immunotherapy	19 months (4-123)	71 months (5-201)	0.13
IVIg (in those with single agent utilized)	10 of 15 (67%)	5 of 5 (100%)	0.27

Abbreviations: AGID, autoimmune gastrointestinal dysmotility; Hx, history; IVIg, intravenous immune globulin; yrs, years.