Table 2: Demographic Results for all groups.

GROUP	GERD	CAD	GERD/CAD	NORMAL
	(N = 49)	(N = 73)	(N = 57)	(N = 57)
Age	54.82 ± 16.445	63.48 ± 13.499	62.93 ± 10.610	56.40 ± 14.318
Gender (no.) Male Female	13 36	37 36	22 35	15 42
Ethnicity Indians Africans Mixed	24 14 13	29 30 13	28 20 09	18 24 15