		Cases		Control		Chi-square
		Number	%	Number	%	X2	p-value
DM	Yes	13	40.63	14	63.64	2.761	0.097
DM	No	19	59.38	8	36.36	2.761	0.097
HTN	Yes	14	43.75	10	43.48	0.00	0.984
HTN	No	18	56.25	13	56.52	0.00	0.984
IHD	Yes	9	28.13	9	39.1	.738	0.392
IHD	No	23	71.88	14	60.9	.738	0.392
Gender	Male	13	40.6	12	52.2	0.72	0.396
Gender	Female	19	59.4	11	47.8	0.72	0.396