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Table 1 Results of the weighted ANOVAs for the behaviour measures in the posttest, taking qualitative moderator variables as independent variables

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

Variable k d+ 95% CI ANOVA results
LL LU
Type of treatment:
  Postural Hygiene (PH) 3 1.267 0.221 2.314  F(1,7) = 0.040, p = .847
  PH + Physical exercise (PE) 6 1.157 0.374 1.940
Age:
  Adolescent 3 0.728 -0.232 1.689  F(1,7) = 1.882, p = .212
  Children 6 1.409 0.735 2.083
Teaching method of PH:
  Theoretical (TT) 2 0.598 -0.540 1.736  F(1,7) = 1.941, p = .206
  TT + Practical 7 1.364 0.735 1.993
Type of behaviour:
  Schoolbag weight (SW) 5 1.118 0.199 2.036  F(1,7) = 0.078, p = .788
  Healthy back habits (HBH) 4 1.266 0.412 2.120
Risk of bias:
  High 3 1.602 0.549 2.654  F(1,7) = 1.216, p = .306
  Some concerns 6 1.014 0.324 1.705
  1. number of studies, dmean coefficient alpha, LL and LU lower and upper 95% confidence limits for d+Knapp-Hartung’s statistic for testing the significance of the moderator variable