General characteristics of the study population.

UCC, patients with history of urothelial cell carcinoma; 1 No. (%); 2 data are presented as percentages (%); 3 mean ± standard deviation; * p<0.05, compared to female patients; ** p<0.01, compared to non-invasive tumors; #p<0.001, compared to non-recurrent tumors; 4 data not available for 7 controls (6 non-smokers and 1 smoker/ex-smoker) and 4 UCC patients (2 non-smokers and 2 smokers/ex-smokers); 5 data not available for 1 smoker/ex-smoker control and 6 UCC patients (2 non-smokers and 4 smokers/ex-smokers).

UCC，即有尿路上皮细胞癌（urothelial cell carcinoma）病史的患者；① 例数（百分比）；② 数据以百分比（%）形式呈现；③ 均值±标准差；* p<0.05，与女性患者相比；** p<0.01，与非侵袭性肿瘤相比；# p<0.001，与无复发肿瘤相比；④ 7名对照者（6名非吸烟者及1名吸烟者/既往吸烟者）与4名UCC患者（2名非吸烟者及2名吸烟者/既往吸烟者）的数据缺失；⑤ 1名吸烟者/既往吸烟者对照者与6名UCC患者（2名非吸烟者及4名吸烟者/既往吸烟者）的数据缺失。