Table 4.

Linear regression of variables associated with PSQI in patients with PsD.

VariableMeasure Estimatep
Group, 0 = PsC, 1 = PsA2.0615190.0001
Sex, 0 = female, 1 = male−0.805640.123
BMI0.0907450.029
Age−0.010980.601
PASI0.0327010.598
Obstructive sleep apnea−2.119050.137
Diabetes1.0236170.223
Hypertension0.4524010.410
Alcohol consumption−0.744460.033
Smoking history−0.002190.997
HAQ final3.054029< 0.0001
EQ-5D anxiety component3.252552< 0.0001
DLQI0.1560010.015
EQ-5D final−10.4221< 0.0001
FACIT-fatigue−0.14112< 0.0001
HAQ pain VAS0.2017580.060
HAQ stiffness VAS0.0363520.773
SF-36 MCS−0.1404< 0.0001
SF-36 PCS−0.12874< 0.0001
PtGA1.442746< 0.0001
  • PSQI: Pittsburgh Sleep Quality Index; PsD: psoriatic disease; PsA: psoriatic arthritis; PsC: psoriasis without arthritis; BMI: body mass index; PASI: Psoriasis Area and Severity Index; HAQ: Health Assessment Questionnaire; VAS: visual analog scale; SF-36: Medical Outcomes Study Short Form-36; MCS: mental component summary; PCS: physical component summary; PtGA: patient’s global assessment; DLQI: Dermatology Life Quality Index; FACIT: Functional Assessment of Chronic Illness Therapy.