Table 4.
PSA testing rates from HSQ surveys
| Time Period | Trial Arm | Total surveyed1 |
PSA Test within past year for screening |
PSA Test within past year for any purpose |
PSA Test within past 3 years for any purpose2 |
PSA Test ever for any purpose2 |
|---|---|---|---|---|---|---|
| Study Year 0–53 | Control | 2214 | 46.0 | 52.5 | 67.9 | 78.9 |
| Study Year 6–9 | Intervention | 861 | 47.6 | 54.4 | 88.9 | 98.8 |
| Control | 1068 | 45.6 | 54.6 | 78.4 | 83.6 | |
| Study Year 10–13 | Intervention | 702 | 43.7 | 53.1 | 73.7 | 98.9 |
| Control | 807 | 47.5 | 56.4 | 80.2 | 88.1 | |
| Study Year 14–17 | Intervention | 294 | 40.5 | 45.6 | 71.1 | 99.3 |
| Control | 339 | 43.1 | 50.2 | 76.4 | 87.9 | |
| All post-screening study years (6–17) | Intervention | 1857 | 45.0 | 52.5 | 80.3 | 98.9 |
| Control | 2214 | 45.9 | 54.6 | 78.7 | 85.9 |
1
Total surveyed excludes unknowns and those with prior prostate cancer diagnosis. Percentages exclude both groups.
2
For intervention arm, rates include PLCO protocol screening tests taken in the relevant time period (for tests within the past 3 years) or at any time (for PSA tests ever). Note the intervention arm HSQ survey only asks about PSA tests taken outside of the PLCO protocol.
3
Adjusted to included “baseline contaminated” subjects. See text for details.