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Table 2 Results of the simple meta-regressions for the behaviour measures in the posttest, taking continuous moderator variables as predictors

From: Effectiveness of physiotherapy interventions for back care and the prevention of non-specific low back pain in children and adolescents: a systematic review and meta-analysis

Predictor variable

k

b j

CI.LL

CI.UL

F

p

Number of weeks of treatment

7

-0.000

-0.223

0.222

0.000

0.996

Time of treatment per week (intensity)

7

0.913

-0.015

1.841

6.400

0.052

Total time of treatment (magnitude)

8

0.068

-0.076

0.212

1.341

0.291

Total posttest sample size

9

-0.000

-0.005

0.004

0.150

0.710

  1. k number of studies, bjregression coefficient of each predictor, CI.LL confidence interval of lower limit, CI.UL confidence interval of upper limit, F Knapp-Hartung’s statistic for testing the significance of the predictor (the degrees of freedom for this statistic are 1 for the numerator and k – 2 for the denominator) p probability level for the F statistic