Table 9.

Predictors of poor sleep in studied cases.

	β	p value	Odds ratio (95% CI)
Disease duration/years	0.061	0.217	1.06 (0.965–1.17)
PASI score	− 0.045	0.481	0.956 (0.842–1.08)
PSS	0.454	< 0.001*	1.57 (1.26–1.97)
PDI	0.238	< 0.001*	1.27 (1.14–1.41)
Overall % predicted = 92.0%; Model χ2 = 108.88; p < 0.001*

PASI psoriasis area severity index, PSS Pruritus severity score, PDI Psoriasi disability index, CI confidence interval, β regression coefficient.

*Statistically significant.