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

BMC Pediatrics

Table 3 Results of the weighted meta-regressions of continuous moderator variables on the lifetime prevalence estimates

Moderator variable	k	b _j	Q _R	p	Q _E	p	R ²
Mean age (years)	30	0.104	5.10	.024	2017.26	< .001	0.457
Gender (% of males)	27	0.008	0.34	.557	4819.51	< .001	0.0
Response rate	27	−0.023	2.94	.086	4807.91	< .001	0.0
Quality scale (0–100)	30	0.019	6.21	.013	2886.94	< .001	0.348
Publication year	30	0.062	9.82	.002	4957.61	< .001	0.0

k: number of studies. b _j: regression coefficient of the moderator variable. Q _R: statistic to test the influence of the moderator variable on the prevalence rates. Q _E: statistic to test the model misspecification. R ²: proportion of variance accounted for by the moderator variable.

ISSN: 1471-2431