Table 2.

Characteristics of patients

	Total	Acute	Subacute	Chronic
Number of patients	114	25	41	54
Average age (years)	50.5	44.4	45.2	57.4*
Standard deviation	17.4	19.7	14.1	16.4
Range	18–74	18–78	20–82	20–84
Gender (female %)	67.5	76.0	63.4	64.8

^*P < 0.01, compared to acute or subacute groups.