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Table 8 Results of the mixed-effects ANOVA for the qualitative moderator variable “research team” on the effect sizes obtained from measures of knowledge in the posttest

From: Preventive physiotherapy interventions for back care in children and adolescents: a meta-analysis

Research team

k

d +

95% C. I.

ANOVA results

   

d l

d u

 

Cardon, Geldhof et al. (Belgium)

6

0.901

0.541

1.261

Q B(5) = 26.49, p < .001

Gómez, Méndez et al. (Spain)

4

2.043

1.600

2.485

R 2 = 0.718

Spence et al. (USA)

2

1.450

0.681

2.219

Q W(10) = 71.28, p < .001

Vidal et al. (Spain)

1

0.469

−0.388

1.327

 

Park & Kim (South Korea)

2

1.739

0.985

2.492

 

Kovacs et al. (Spain)

1

0.289

−0.516

1.094

 
  1. k: number of studies. d +: mean effect size. d l and d u: lower and upper confidence limits of the 95% confidence interval around the mean effect size. Q B: statistic for testing the significance of the moderator variable. Q W: statistic for testing the model misspecification. R 2: proportion of variance accounted for by the moderator variable.
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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