Table 1 Socio-demographic and main clinical characteristics at enrolment

Age at enrolment, years

Mean (SD)

52.4 (11.6)

Males

N (%)

172 (43.1%)

Caucasian

N (%)

398 (99.7%)

Smoking status at enrolment

Non-smoker

N (%)

236 (67.8%)

Current smoker

N (%)

63 (18.1%)

Previous smoker

N (%)

49 (14.1%)

UNK

N

51

BMI classes at enrolment*

Underweight

N (%)

9 (2.9%)

Normal weight

N (%)

111 (35.7%)

Overweight

N (%)

114 (36.7%)

Obese

N (%)

77 (24.8%)

UNK

N

88

Duration of psoriasis at start of biologic treatment under analysis, years (N = 226)

Mean (SD)

15.3 (12.2)

Duration of PsA at start of biologic treatment under analysis, years (N = 392)

Mean (SD)

7.2 (6.9)

DAS28 ESR at start of biologic treatment under analysis (N = 279)

Mean (SD)

4.0 (1.3)

DAS28 CRP at start of biologic treatment under analysis (N = 312)

Mean (SD)

3.8 (1.2)