Table 1. Multivariate binary-logistic regression model for the analysis of independent criteria, which in a cohort of 557 urologists predict the answer “partial penectomy” to the question asked about the preferred local therapy for penile cancer in clinical stage T1.

Predictor	n (%) or median (IQR)	OR (95% CI)	P
University center (vs. non-university center)*	19 (42.2%) vs. 26 (57.8%)	1.26 (0.79–2.02)	0.326
Leading position [head or senior physician] (vs. residents and board-certified urologists)** [n=554]	206 (37.2%) vs. 348 (62.8%)	0.37 (0.22–0.65)	<0.001
Number of PeCa-patients treated in 2017, cont.*	5 [3–8]	0.89 (0.84–0.94)	<0.001
In-house patient capacity per department, cont.*	39 [30–50]	0.98 (0.96–1.01)	0.136
Department performing OPS for PeCa-patients (vs. urologist not performing OPS)*	41 (91.1%) vs. 4 (8.9%)	1.61 (0.73–3.56)	0.238
Number of urologists in the department, cont.*	14 [10–18]	1.04 (0.99–1.10)	0.079
Respondent carries out PeCa surgery independently** [n=556]	247 (44.4%) vs. 309 (55.6%)	2.00 (1.19–3.37)	0.009
Germany (vs. outside Germany)*	34 (75.6%) vs. 11 (24.4%)	1.33 (0.83–2.14)	0.238

*, refers to the 45 departments involved; **, refers to the 557 participating urologists. CI, confidence interval; cont., continuously; IQR, interquartile range; OPS, organ-preserving surgery; PeCa, penile cancer.