Table 1. Demographic Characteristics of Patients.
| Characteristic | Year | |||||
|---|---|---|---|---|---|---|
| 2007 | 2008 | 2009 | 2010 | 2011 | Overall | |
| No. of procedures | 5,484 | 5,959 | 6,104 | 6,468 | 6,866 | 30,881 |
| Sex | ||||||
| Male | 3,014 (55.0) | 3,181 (53.4) | 3,308 (54.2) | 3,359 (51.9) | 3,660 (53.3) | 16,522 (53.5) |
| Female | 2,470 (45.0) | 2,778 (46.6) | 2,796 (45.8) | 3,109 (48.1) | 3,206 (46.7) | 14,359 (46.5) |
| Age (yr) | ||||||
| Mean | 57.5 | 57.9 | 58.0 | 58.4 | 58.3 | 58.1 |
| < 45 | 989 (18.0) | 984 (16.5) | 1,017 (16.7) | 1,055 (16.3) | 1,098 (16.0) | 5,143 (16.7) |
| 45-64 | 2,521 (46.0) | 2,726 (45.7) | 2,803 (45.9) | 2,953 (45.7) | 3,251 (47.3) | 14,254 (46.2) |
| 65-74 | 1,432 (26.1) | 1,645 (27.6) | 1,655 (27.1) | 1,744 (27.0) | 1,750 (25.5) | 8,226 (26.6) |
| 75-84 | 489 (8.9) | 547 (9.2) | 563 (9.2) | 653 (10.1) | 709 (10.3) | 2,961 (9.6) |
| ≥ 85 | 53 (1.0) | 57 (1.0) | 66 (1.1) | 63 (1.0) | 58 (0.8) | 297 (1.0) |
| Hospital type | ||||||
| Clinic | 122 (2.2) | 99 (1.7) | 69 (1.1) | 81 (1.3) | 90 (1.3) | 461 (1.5) |
| Hospital | 1,447 (26.4) | 1,611 (27.0) | 1,704 (27.9) | 1,994 (30.8) | 2,118 (30.8) | 8,874 (28.7) |
| General hospital | 2,109 (38.5) | 2,195 (36.8) | 2,237 (36.6) | 2,174 (33.6) | 2,287 (33.3) | 11,002 (35.6) |
| Tertiary hospital | 1,806 (32.9) | 2,054 (34.5) | 2,094 (34.3) | 2,219 (34.3) | 2,371 (34.5) | 10,544 (34.1) |
| Hospital volume | ||||||
| Low | 1,861 (33.9) | 2,049 (34.4) | 2,334 (38.2) | 2,317 (35.8) | 2,550 (37.1) | 11,111 (36.0) |
| Medium | 1,077 (19.6) | 1,082 (18.2) | 1,077 (17.6) | 1,585 (24.5) | 1,481 (21.6) | 6,302 (20.4) |
| High | 2,546 (46.4) | 2,828 (47.5) | 2,693 (44.1) | 2,566 (39.7) | 2,835 (41.3) | 13,468 (43.6) |
| Payer type | ||||||
| Health insurance | 4,674 (85.2) | 5,168 (86.7) | 5,369 (88.0) | 5,744 (88.8) | 6,092 (88.7) | 27,047 (87.6) |
| Medical aid | 810 (14.8) | 791 (13.3) | 735 (12.0) | 724 (11.2) | 774 (11.3) | 3,834 (12.4) |
Values are presented as number (%) unless otherwise indicated.