borderline non-significantp = 0.05
An association was observed with male gender (OR = 2.37; 95%CI 1.07–5.25; p = 0.03), older age which is borderline non-significant for the group 35–44 years (OR = 2.41; 95%CI 0.99–5.88; p = 0.05) and significant for the group 45–60 years (OR = 3.17; 95%CI 1.18–8.50; p = 0.02) and smoking (OR = 3.35; 95%CI 1.17–9.60; p = 0.02).