Table 2.

Different age class range and case and control frequencies in each class

Age categories	Years old range	Male = 919		Female = 646
		Case	Control	Case	Control
Early	20–45	29	29	15	15
Middle	45–65	231	231	180	180
Late	65–80	175	175	120	120
Old	> 80	25	24	8	8