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Table 3 Probability (Pr) of positive test result by previous test result and age group among women according to reason for testing and men, 2008–2014
| Previous test result | Age group, years | Pr to test positive in % (99%-CI) | |||
|---|---|---|---|---|---|
| Women | Men | ||||
| Screening under 25 years | Screening in pregnancy | Diagnostic testing | All tests | ||
| Negative | 15–19 | 4.3 (4.1–4.6) | 6.5 (6.0–8.1) | 5.3 (4.8–5.8) | 9.2 (5.9–14.1) |
| 20–24 | 3.4 (3.2–3.5) | 3.0 (2.9–3.4) | 4.6 (4.3–4.9) | 10.7 (9.0–12.6) | |
| 25–29 | – | 1.1 (1.0–1.3) | 3.1 (2.9–3.4) | 9.5 (8.0–11.2) | |
| 30–34 | – | 0.4 (0.4–0.5) | 1.6 (1.4–1.9) | 7.8 (6.5–9.3) | |
| 35–39 | – | 0.3 (0.2–0.4) | 1.2 (1.0–1.5) | 6.4 (5.2–7.9) | |
| 40+ | – | 0.3 (0.1–0.6) | 1.1 (0.9–1.3) | 5.5 (4.8–6.3) | |
| Positive | 15–19 | 12.6 (11.3–14.0) | 28.4 (34.3–45.7) | 16.8 (15.7–18.1) | 18.6 (12.7–26.4) |
| 20–24 | 9.8 (9.1–10.4) | 18.5 (20.6–24.9) | 12.7 (12.0–13.4) | 19.2 (16.7–22.0) | |
| 25–29 | – | 10.4 (10.0–13.3 | 10.1 (9.2–11.0) | 16.6 (14.3–19.3) | |
| 30–34 | – | 7.9 (6.8–10.8) | 7.1 (6.0–8.4) | 16.4 (13.8–19.5) | |
| 35–39 | – | 6.4 (4.3–10.7) | 8.8 (6.9–11.0) | 15.4 (12.3–19.1) | |
| 40+ | – | 5.9 (2.3–17.2) | 5.9 (4.3–8.1) | 16.9 (14.7–19.4) | |
| Unknown | 15–19 | 4.9 (4.7–5.0) | 9.7 (10.2–11.3) | 8.1 (7.7–8.4) | 16.9 (15.7–18.2) |
| 20–24 | 5.7 (5.6–5.8) | 5.8 (6.0–6.4) | 8.3 (8.0–8.6) | 22.3 (21.6–23.1) | |
| 25–29 | – | 2.2 (2.1–2.3) | 5.1 (5.0–5.3) | 18.0 (17.3–18.7) | |
| 30–34 | – | 1.1 (1.0–1.1) | 2.9 (2.7–3.0) | 12.4 (11.8–13.1) | |
| 35–39 | – | 0.7 (0.6–0.8) | 1.9 (1.8–2.1) | 9.4 (8.8–10.1) | |
| 40+ | – | 0.6 (0.5–0.8) | 1.6 (1.5–1.7) | 6.1 (5.8–6.4) | |
