Table 3 The logistic regression analysis and consequent odds ratios for subjects with BCC and SCC and/or PM lesions compared to subjects with BCC only

Age years

1.098

 < 0.001

1.057–1.142

1.088

 < 0.001

1.038–1.140

Sex

 Male

1 (ref)

1 (ref)

 Female

0.383

0.003

0.205–0.717

0.210

0.002

0.002

Immunosuppression

 No

1 (ref)

1 (ref)

 Yes

1.257

0.599

0.536–2.948

1.077

0.894

0.359–3.229

Past or present extracutaneous malignancy

 No

1 (ref)

1 (ref)

 Yes

1.740

0.190

0.761–3.979

1.374

0.572

0.457–4.133

Occupation type

 mainly indoor

1 (ref)

1 (ref)

 mainly outdoor/mix

2.409

0.018

1.160–5.003

1.183

0.756

0.409–3.424

Lifetime sunburns

 Rarely

1 (ref)

1 (ref)

 Occasionally

0.681

0.285

0.336–1.378

1.841

0.215

0.701–4.833

 Often

1.026

0.952

0.446–2.361

2.872

0.058

0.965–8.546

ASA use

 no use

1 (ref)

1 (ref)

 occasional

1.243

0.738

0.347–4.459

1.612

0.587

0.288–9.032

 regular

3.350

0.008

1.380–8.133

2.405

0.121

0.794–7.285

Alcohol consumption

 never

1 (ref)

1 (ref)

   ≤ 1x /month

0.494

0.254

0.147–1.661

1.049

0.948

0.248–4.443

 3-4x /month

0.455

0.219

0.130–1.596

0.545

0.417

0.125–2.364

 1-2x/week or more

0.266

0.034

 0.078–0.906

0.189

0.028

0.043–0.837

Platelet-to-lymphocyte-ratio

1.003

0.276

0.998–1.009

1.009

0.047

1.000–1.018

AMS

 no

1 (ref)

1 (ref)

 yes

0.250

0.005

0.094–0.663

0.092

0.001

0.022–0.396