Table 3.

Glasgow Sleep Effort Scale (GSES) Item-by-Item Spearman`s Rho Correlation Matrix in Clinical (n = 120) and Non-Clinical (n = 110) Samples

	GSES1	GSES2	GSES3	GSES4	GSES5	GSES6	GSES7
GSES1	–	0.13	0.30**	0.44**	0.51**	0.37**	0.27**
GSES2	0.12	–	0.22*	0.23**	0.16	0.16	0.48**
GSES3	0.25**	0.025	–	0.23*	0.45**	0.37**	0.31**
GSES4	0.56**	0.14	0.17	–	0.27**	0.43**	0.40**
GSES5	0.40**	0.23*	0.14	0.34**	–	0.31**	0.32**
GSES6	0.44**	0.33**	0.25**	0.58**	0.38**	–	0.47**
GSES7	0.37**	0.20*	0.19*	0.32**	0.45**	0.39**	–

Notes: *P< 0.05, **P< 0.01; correlations for the clinical sample are above and for the non-clinical sample are blow diagonal.