Validation of a novel online depression symptom severity rating scale: the R8 Depression

Table 6 Pearson’s correlation and Kendall’s tau coefficients between the R8 Depression and the PHQ-9 scores

Sample	n	Pearson’s correlation*	p value**	Kendall’s tau	p value*
Baseline	236	0.83	< 0.001	0.64	< 0.001
Baseline + reviews	1053	0.90	< 0.001	0.75	< 0.001
Baseline + reviews + normative	1240	0.91	< 0.001	0.76	< 0.001

ISSN: 1477-7525