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Table 4 Results of the simple meta-regressions for the trunk flexion endurance 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 0.054 -0.055 0.163 1.612 0.260
Time of treatment per week (intensity) 7 0.869 0.225 1.513 12.026 0.018
Total time of treatment (magnitude) 7 0.031 0.004 0.057 8.958 0.030
Total posttest sample size 7 -0.006 -0.024 0.011 0.897 0.387
  1. k number of studies, bjregression coefficient of each predictor, CI.LL confidence interval of lower limit, CI.UL confidence interval of upper limit, FKnapp-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