Development and validation of a simple and multifaceted instrument, GERD-TEST, for the clinical evaluation of gastroesophageal reflux and dyspeptic symptoms

Table 9 Type of symptoms responding to the therapeutic efficacy as assessed by the patients (Multivariate analysis)

	Q11. Patient's impression		Q12. Numeric rating scale
	β	P value	β	P value
ΔGERD-SS (0-4 wk)	0.371	< 0.0001	0.411	< 0.0001
ΔFD-SS (0-4 wk)	0.037	0.6541	-0.092	0.2656
R2 (P value)	0.155	< 0.0001	0.133	< 0.0001
	Effect size	Small	Medium	Large
	β	0.1 ≤	0.3 ≤	0.5 ≤
	R2	0.02 ≤	0.13 ≤	0.26 ≤