Table 2.

Examination of general medical comorbidity in patients receiving acoustic neuroma excision from 1994 through 2003 using a medical comorbidity score

Comorbidity score	0	1	2	3	>3
Proportion of patients	62.9%	27.0%	8.3%	1.7%	0.2%
Incidence of postoperative morbidity	25.0%	27.5%	32.1%	24.4%	50%

Note: Score is derived from 25 comorbidity markers (range = 0–25). The majority of patients had no comorbidities; the incidence of postoperative morbidity correlated with increasing comorbidity. The maximum comorbidity score to receive surgery was 5.