Table 3.

Correlations among PASI score and study variable in psoriatic patients

Parameters	Simple correlation		Adjusted for BMI
	PASI score		PASI score
	r	p value	r	p value
Age (years)	0.129	0.083	0.147	0.057
DLQI	0.632	<0.001	0.612	<0.001
Anthropometric variables
BMI (kg/m2)	0.306	<0.001	–	–
WC (cm)	0.405	<0.001	0.272	<0.001
Metabolic profile
SBP (mmHg)	0.219	0.003	0.162	0.036
DBP (mmHg)	0.177	0.017	0.110	0.153
Glucose (mg/dl)	0.181	0.015	0.109	0.158
Total cholesterol (mg/dl)	0.398	<0.001	0.499	<0.001
HDL cholesterol (mg/dl)	−0.368	<0.001	−0.339	<0.001
LDL cholesterol (mg/dl)	0.489	<0.001	0.462	<0.001
Triglycerides (mg/ml)	0.503	<0.001	0.474	<0.001
AST (U/l)	0.203	0.006	0.131	0.089
ALT (U/l)	0.184	0.014	0.096	0.215
MetS (n. parameters)	0.450	<0.001	0.362	<0.001
CRP levels (ng/ml)	0.430	<0.001	0.383	<0.001
Bioelectrical variables
R (Ohm/m)	0.312	<0.001	0.414	<0.001
Xc (Ohm/m)	−0.587	<0.001	−0.529	<0.001

Simple and partial correlation among PASI score, age, DLQI, anthropometric variables, metabolic profile and bioelectrical variables. There was a significant positive correlation among PASI score and DLQI, BMI, WC, SBP, DBP, glucose, lipid and hepatic profile, MetS and R; moreover there was a significant negative association with HDL-cholesterol and Xc. After adjustment for BMI, the association among PASI score and DBP, glucose, AST and ALT, were lost

Correlations among variables were analyzed using Pearson r or Spearman’s rho correlation coefficients. A p value in italic denotes a significant difference (p < 0.05)

PASI psoriasis area and severity index, DLQI dermatology life quality index, BMI body mass index, WC waist circumference, SBP systolic blood pressure, DBP diastolic blood pressure, HDL high-density lipoprotein, LDL low-density lipoprotein, AST aspartate aminotransferase, ALT alanine aminotransferase, MetS metabolic syndrome, CRP c-reactive protein, R resistance, Xc reactance