TABLE 1.

Participant demographics.

Age group (Years)	N.	Mean (Years)	S.D. (Years)
20−29	10	25.50	3.31
30−39	11	36.09	1.81
40−49	17	44.18	2.79
50−59	24	54.13	2.54
60−69	24	64.04	2.40