Prevalence of low back pain in children and adolescents: a meta-analysis

BMC Pediatrics

Table 5 Results of the multiple meta-regression on the lifetime prevalence estimates

Predictor variable	b _j	Z	p	Results of the full model
Constant	−80.160	−2.49	.013
Delimitation of pain	−0.516	−2.05	.041	Q _R(4) = 27.24, p < .001
Mean age (years)	0.029	0.55	.584	R ² = 0.438
Quality scale (0–100)	0.005	0.63	.531	Q _E(25) = 1306.02, p < .001
Publication year	0.040	2.49	.013

b _j: partial regression coefficient of each moderator variable. Z: statistic to test the influence of each moderator variable on the prevalence rates. Q _R: statistic to test the statistical significance of the full model. Q _E: statistic to test the model misspecification. R ²: proportion of variance accounted for by the moderator variables.

ISSN: 1471-2431