Table 1.

Age and sex distribution for the patients involved in the study.

Age (years)	Female	Male	Total
20–29	21	30	51 (0.6%)
30–39	129	152	281 (3.2%)
40–49	261	211	472 (5.3%)
50–59	538	584	1122 (12.6%)
60–69	1104	1106	2210 (24.8%)
70–79	1279	1391	2670 (29.9%)
80–89	757	930	1687 (18.9%)
90 >	222	203	425 (4.8%)
Total	4311 (48.3%)	4607 (51.7%)	8918