Multigroup latent class model of musculoskeletal pain combinations in children/adolescents: identifying high-risk groups by gender and age

Table 4 Membership and item response probabilities in age-specific LCA modeling

	Age (years)	Latent class
	Age (years)	minor pain class	moderate pain class	major pain class
Class Membership probabilities (%)	≤ 13	29.1%	63.9%	7.0%
Class Membership probabilities (%)	≥ 14	61.4%	33.3%	5.3%
MSP
Neck pain	≤ 13	0.07 #	0.30	0.97
Neck pain	≥ 14	< 0.01	0.71	0.70
Shoulder pain	≤ 13	< 0.01	0.27	0.69
Shoulder pain	≥ 14	0.09	0.29	0.71
Low back pain	≤ 13	0.02	0.21	0.57
Low back pain	≥ 14	0.08	0.30	1.00
Upper back pain	≤ 13	< 0.01	0.44	1.00
Upper back pain	≥ 14	0.24	0.42	1.00

#: Rho estimates (item response probabilities) was presented. Considerable differences between age groups are shown in bold (≥0.1). Test the invariance across age groups (Chi2_dif (12) =22.46, P-value = 0.033)

ISSN: 1129-2377