Table 7.

Correlation between the UNESP-Botucatu unidimensional pain scale and the VAS, NRS and SDS

Scales	Local observer	Blinded observers			Total
		1	2	3
VAS	0.812*	0.847*	0.884*	0.860*	0.839*
NRS	0.869*	0.835*	0.895*	0.912*	0.883*
SDS	0.823*	0.854*	0.874*	0.910*	0.866*

*p = 0.000. Interpretation of Spearman’s correlation coefficient: 0 – 0.35: low correlation; 0.35 – 0.7: moderate correlation; 0.7 – 1.0: high correlation.