Table 2.

Baseline IBS SSS according to whether or not an IBS SSS score was obtained at 24 months

	24 month score obtained—mean (SE)	24 month score missing—mean (SE)
Acupuncture group	269.13 (8.79) n=78	302.92 (14.02) n=37
Usual care group	273.67 (8.73) n=61	281.27 (10.49) n=52

Of those providing follow-up data at 24 months, baseline IBS SSS data were available for 78 of 79 patients in the acupuncture group and 61 of 62 patients in the usual care group.

IBS SSS, irritable bowel syndrome symptom severity score.