Supplementary Table 4.

The constituent ratio of different histological types of penile cancer

Histological type	Constituent ratio (%)	Number of cases	95% CI
Keratinizing SCC	58.2	597	54.2–62.2
Basaloid SCC	8.2	84	2.3–14.1
Verrucous SCC	4.7	48	−1.3–10.7
Non-keratinizing	2.7	28	−3.3–8.7
Warty	3.9	40	−2.1–9.9
Papillary	2.4	25	−3.6–8.4
Warty-basaloid	4.6	47	−1.4–10.6
Combined	4.4	45	−1.6–10.4
Others	10.9	112	5.1–16.7
Total	100	1026	−4.3–26.6

SCC: squamous cell carcinoma; CI: confidence interval