Table 4. Interobserver reliability of the Geissler classification.

	Kappa (κ)	95% confidence interval
Geissler classification	0.18	0.11 to 0.26
Surgeon characteristics
Sex
Women	0.13	–0.004 to 0.26
Men	0.19	0.12 to 0.26
Years of independent practice
0–10	0.16	0.10 to 0.22
> 10	0.23	0.12 to 0.34
Giving supervision to trainees
No	0.28	0.02 to 0.54
Yes	0.18	0.11 to 0.26
Region
North America	0.15	0.07 to 0.22
Other	0.23	0.13 to 0.33

Note: Multirater kappa indicated by κ.