First-ever total prostate-specific antigen (PSA) median and IQR reported for age category and race group between 2006 and 2016 in the Gauteng Province, South Africa
| Category | Median (IQR) µg/L | %≥75th Percentile | %≥4 µg/L | %<10 µg/L (Low risk) | %10–19.9 µg/L (Intermediate risk) | %≥20 µg/L (High risk) | P value* |
| Overall | 0.9 (0-5–1.8) | 25.2% | 11.7% | 227 629 (95.0%) | 5439 (2.3%) | 6438 (2.7%) | |
| Age category | |||||||
| 30–39 | 0.7 (0.4–1.0) | 25.7% | 1.7% | 19 481 (99.6%) | 50 (0.3%) | 26 (0.1%) | |
| 40–49 | 0.7 (0.4–1.1) | 25.1% | 2.3% | 57 891 (99.4%) | 195 (0.3%) | 129 (0.2%) | ≤0.05 |
| 50–59 | 0.8 (0.5–1.5) | 26.0% | 7.5% | 71 842 (97.4%) | 1009 (1.4%) | 883 (1.2%) | ≤0.05 |
| 60–69 | 1.3 (0.7–2.9) | 25.0% | 18.5% | 51 002 (92.3%) | 1946 (3.5%) | 2330 (4.2%) | ≤0.05 |
| ≥70 | 2.3 (1.0–6.4) | 25.0% | 35.5% | 22 644 (82.0%) | 2070 (7.5%) | 2885 (10.5%) | ≤0.05 |
| Unknown | 1.0 (0.6–2.1) | 25.5% | 14.8% | 4769 (93.1%) | 169 (3.3%) | 186 (3.6%) | ≤0.05 |
| Race group | |||||||
| Indian/Asian | 0.9 (0.5–1.8) | 21.8% | 10.7% | 4 016 (96.3%) | 86 (2.1%) | 67 (1.6%) | |
| Black African | 0.9 (0.5–1.8) | 25.8% | 11.6% | 177 049 (96.3%) | 4 271 (2.1%) | 5262 (1.6%) | 0.1527 |
| Multiracial | 0.9 (0.5–1.9) | 25.1% | 12.6% | 8183 (94.9%) | 208 (2.4%) | 232 (2.7%) | ≤0.05 |
| White | 1.0 (0.5–2.0) | 22.7% | 12.5% | 15 965 (95.5%) | 380 (2.1%) | 316 (2.4%) | ≤0.05 |
| Unknown | 0.9 (0.5–1.8) | 24.7% | 11.2% | 22 416 (95.8%) | 494 (2.3%) | 561 (1.9%) | 0.2374 |
The proportion of men with a first-ever total PSA test ≥75th percentile, ≥4,<10 (low risk), 10–19.9 (intermediate-risk) and ≥20 µg/L (high risk) are also reported for age category and race group. The p value for the Dunn’s test for multiple pairwise comparisons was reported (compared with the first category).
*For each age category and race group, the Dunn’s test for multiple pairwise comparisons was performed and the p-value reported when compared with the first category.