Demographic characteristics of platinum mine employees, 1998–2002
| Overall, n (%)* | Year | |||||
|---|---|---|---|---|---|---|
| 1998, n (%) | 1999, n (%) | 2000, n (%) | 2001, n (%) | 2002, n (%) | ||
| Total | 25 274 (100) | 14 371 (100) | 16 816 (100) | 17 103 (100) | = 15 759 (100) | 16 744 (100) |
| *The total number of employees for whom there was at least one routine medical examination record in the period 1998 to 2002. | ||||||
| Gender | ||||||
| Male | 24 606 (97.4) | 14 215 (98.9) | 16 575 (98.6) | 16 869 (98.6) | 15 506 (98.4) | 16 381 (97.8) |
| Female | 666 (2.6) | 156 (1.1) | 241 (1.4) | 234 (1.4) | 253 (1.6) | 361 (2.2) |
| Unknown | 2 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 2 (0.0) |
| Age group (years) | ||||||
| <25 | 2604 (10.3) | 618 (4.3) | 933 (5.5) | 1019 (6.0) | 1140 (7.2) | 1633 (9.8) |
| 25–34 | 5996 (23.7) | 3091 (21.5) | 3698 (22.0) | 3773 (22.1) | 2532 (16.1) | 4043 (24.1) |
| 35–44 | 10 927 (43.2) | 6933 (48.2) | 7953 (47.3) | 8094 (47.3) | 7356 (46.7) | 7504 (44.8) |
| 45–54 | 4897 (19.4) | 3190 (22.2) | 3597 (21.4) | 3608 (21.1) | 3303 (21.0) | 3250 (19.4) |
| 55–66 | 850 (3.4) | 539 (3.8) | 635 (3.8) | 609 (3.6) | 428 (2.7) | 314 (1.9) |
| Income group | ||||||
| Low | 14 750 (93.7) | 9814 (94.2) | 11 634 (95.2) | 12 148 (95.0) | 11 872 (95.9) | 12 003 (96.1) |
| Middle | 772 (4.9) | 471 (4.5) | 474 (3.9) | 514 (4.0) | 415 (3.4) | 402 (3.2) |
| High | 212 (1.3) | 129 (1.2) | 116 (0.9) | 124 (1.0) | 90 (0.7) | 82 (0.7) |
| Unknown | 9540 (–) | 3957 (–) | 4592 (–) | 4317 (–) | 3382 (–) | 4257 (–) |
| Race | ||||||
| Black | 22 120 (87.5) | 13 238 (92.1) | 15 603 (92.8) | 15 828 (92.5) | 14 602 (92.7) | 15 110 (90.2) |
| White | 3154 (12.5) | 1133 (7.9) | 1213 (7.2) | 1275 (7.5) | 1157 (7.3) | 1634 (9.8) |