Histological analysis of surgical lumbar intervertebral disc tissue provides evidence for an association between disc degeneration and increased body mass index

Table 3 Statistical correlation (Spearman-Rho, two-tailed)

	Statistic	HDS-NP	HDS-AF	age	weight	height	BMI
HDS-NP	coefficient of correlation	1.000	.328**	.051	.233**	.154*	.222**
	level of significance	.	.000	.155	.000	.018	.001
HDS-AF	coefficient of correlation	.328**	1.000	-.002	.124	-.027	.177**
	level of significance	.000	.	.949	.071	.694	.010
age	coefficient of correlation	.051	-.002	1.000	-.072	-.320**	.172**
	level of significance	.155	.949	.	.254	.000	.006
weight	coefficient of correlation	.233**	.124	-.072	1.000	.662**	.820**
	level of significance	.000	.071	.254	.	.000	.000
height	coefficient of correlation	.154*	-.027	-.320**	.662**	1.000	.157*
	level of significance	.018	.694	.000	.000	.	.013
BMI	coefficient of correlation	.222**	.177**	.172**	.820**	.157*	1.000
	level of significance	.001	.010	.006	.000	.013	.

ISSN: 1756-0500