Table 6.

Effect size.

	Hedges ga	Lower limit	Upper limit	rb
Total MSQc	0.36	–0.3	1.0	0.25
Bloating	1.1	0.7	2.3	0.64
Constipation	0.41	–0.3	1.1	0.21
Intestinal stomach pain	1.3	0.6	2.2	0.38
Acid reflux	0.37	–0.1	0.9	0.63

^aHedges g is calculated from Cohen d accounting for repeated measures. Effect size is based on the Cohen assumptions: g=0.2 would be considered a small effect size, 0.5 represents a medium effect size, and 0.8 a large effect size.

^br: Pearson correlation.

^cMSQ: Medical Symptoms Questionnaire.