Table 4.

Correlations between variables.

	SF-36: Global	FSS	PSQI: Global	DASS: Depression	DASS: Anxiety	CDS	No. visual symptoms	VS Intensity	VS disruptiveness	VS impact on QoL
SF-36: Global	–	−0.484 (<0.001)	−0.373 (<0.001)	−0.619 (<0.001)	−0.653 (<0.001)	−0.559 (<0.001)	−0.117 (0.194)	−0.151 (0.092)	−0.204 (0.023)	−0.304 (<0.001)
FSS	−0.484 (<0.001)	–	0.164 (0.067)	0.276 (0.002)	0.299 (<0.001)	0.371 (<0.001)	0.270 (0.002)	0.125 (0.165)	0.186 (0.038)	0.217 (0.015)
PSQI: Global	−0.373 (<0.001)	0.164 (0.067)	–	0.265 (0.003)	0.446 (<0.001)	0.290 (<0.001)	0.130 (0.148)	−0.014 (0.874)	0.008 (0.932)	0.017 (0.852)
DASS: depression	−0.619 (<0.001)	0.276 (0.002)	0.265 (0.003)	–	0.596 (<0.001)	0.488 (<0.001)	−0.021 (0.815)	0.005 (0.957)	0.068 (0.450)	0.187 (0.036)
DASS: Anxiety	−0.653 (<0.001)	0.299 (<0.001)	0.446 (<0.001)	0.596 (<0.001)	–	0.473 (<0.001)	0.177 (0.048)	0.069 (0.442)	0.190 (0.034)	0.305 (<0.001)
CDS	−0.559 (<0.001)	0.371 (<0.001)	0.290 (<0.001)	0.488 (<0.001)	0.473 (<0.001)	–	0.256 (0.004)	0.288 (<0.001)	0.222 (0.013)	0.284 (0.001)
No. visual symptoms	−0.117 (0.194)	0.270 (0.002)	0.130 (0.148)	−0.021 (0.815)	0.177 (0.048)	0.256 (0.004)	–	0.209 (0.019)	0.455 (<0.001)	0.343 (<0.001)
VS Intensity	−0.151 (0.092)	0.125 (0.165)	−0.014 (0.874)	0.005 (0.957)	0.069 (0.442)	0.288 (<0.001)	0.209 (0.019)	–	0.496 (<0.001)	0.283 (0.001)
VS disruptiveness	−0.204 (0.023)	0.186 (0.038)	0.008 (0.932)	0.068 (0.450)	0.190 (0.034)	0.222 (0.013)	0.455 (<0.001)	0.496 (<0.001)	–	0.725 (0.001)
VS impact on QoL	−0.304 (<0.001)	0.217 (0.015)	0.017 (0.852)	0.187 (0.036)	0.305 (<0.001)	0.284 (0.001)	0.343 (<0.001)	0.283 (0.001)	0.725 (0.001)	–

Correlation coefficient (p-value). Bold, significant.

SF-36, Short Form 36 Health Survey; FSS, Fatigue Severity Scale; PSQI, Pittsburgh Sleep Quality Index; DASS, Depression Anxiety Stress Scale; CDS, Cambridge Depersonalisation Scale; VS, Visual snow; QoL, quality of life.