TABLE 5.
Six-year cumulative incidence, risk per 1,000 women screened, and negative predictive value among those testing negative at baseline
| Characteristic | Cumulative incidence (% [95% CI]) | Risk per 1,000 women screened (95% CI) | Negative predictive value(% [95% CI])a | |||
|---|---|---|---|---|---|---|
| CIN2 or worse | ||||||
| AHPV negative | 0.62 | 0.24–1.59 | 6.2 | 2.4–15.9 | 99.38 | 98.41–99.76 |
| HC2 negative | 0.47 | 0.27–0.81 | 4.7 | 2.7–8.1 | 99.53 | 99.19–99.73 |
| LBC negative | 1.66 | 0.72–3.83 | 16.6 | 7.2–38.3 | 98.34 | 96.17–99.28 |
| CIN3 or worse | ||||||
| AHPV negative | 0.31 | 0.17–0.57 | 3.1 | 1.7–5.7 | 99.69 | 99.43–99.83 |
| HC2 negative | 0.22 | 0.10–0.49 | 2.2 | 1.0–4.9 | 99.78 | 99.51–99.90 |
| LBC negative | 0.93 | 0.29–3.02 | 9.3 | 2.9–30.2 | 99.07 | 96.98–99.71 |
a
Note the NPV is estimated excluding the risk among those attending the second round of screening.