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Table 2 Paired samples statistics and paired t-test

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

 

Mean pre-score (SD)

Mean post-score (SD)

Mean difference (SD)

CI 95%

P-value

Question # 1 Logical

7,02 (1725)

6,76 (2254)

− 0.259 (1.931)

− 0.485 – 0.032

0.025*

Question # 2 Alleviate

5.21 (2.048)

5.82 (2.647)

0.610 (2.574)

0.308–0.912

<  0.001*

Question # 3 Recommending

6.30 (2.139)

7.41 (2.177)

1.106 (2.036)

0.868–0.345

<  0.001*

Question # 4 Successful

5.98 (1.848)

6.15 (1.887)

0.174 (1.667)

−0.022 – 0.369

0.081

  1. Mean pre- and post-scores of parental anxiety to acupuncture, and mean differences between post- and pre-scores. Score options from 0 to 9, a higher rating indicated a higher credibility/expectancy. N = 282
  2. *Significant: p-value ≤0.05