Placebo by proxy expectations toward acupuncture change over time: a survey comparing parental expectations to acupuncture pre- and postoperatively

Table 3 Stepwise multivariable prediction model of regression analysis. Variables^a for predicting change of parental expectancy. N = 282

Dependent variables	Independent variables: selected predictors	B (CI 95%)	P-value ≤0.2
Question # 1: Logical	If female child	0.375 (−0.081–0.830)	0.107
	If education parents > 12 years	− 0.429 (0.933–0.076)	0.096
	Parental anxiety^b	0.058 (− 0.023–0.138)	0.159
	If assignment to acupuncture	0.740 (0.249–1.230)	0.003
Question # 2: Alleviate	Parental anxiety^b	0.121 (0.014–0.228)	0.026
Question # 2: Alleviate	If assignment to acupuncture	0.594 (−0.135 – 1.322)	0.110
Question # 3: Recommending	Acupuncture previously useful	−0.339 (− 0.826–0.149)	0.173
Question # 4: Successful	Age parents	− 0.062 (− 0.097 – − 0.028)	< 0.001
	If health professional parents	0.327 (− 0.068–0.722)	0.105
	Parental anxiety^b	0.128 (0.059–0.197)	< 0.001
	Acupuncture previously useful	− 0.286 (− 0.671–0.100)	0.146
	If assignment to acupuncture	0.599 (0.001–1.197)	0.050

^aVariables are selected predictors, according to p- value ≤0,2. P ≤ 2 is used to provide better predictions and more power for the selection of predictors ([13] p. 196)
^bContinuous variable on a scale from 0 to 9, a higher rating indicated higher level of anxiety

ISSN: 2662-7671