Table 4.
Incidence and mortality after 12 years (until December 2011)*
| Outcome | No. | Screening group | AAR (95% CI) | No. | Control group | AAR (95% CI) | IRR (95% CI) | P | ||
|---|---|---|---|---|---|---|---|---|---|---|
| PYO | Crude rate (95% CI) | PYO | Crude rate (95% CI) | |||||||
| Cervical cancer incidence | 161 | 602152.3 | 26.74 (23.41 to 30.74) | 28.98 (24.51 to 33.45) | 166 | 603811.8 | 27.49 (23.66 to 32.09) | 29.44 (27.15 to 31.73) | 0.973 (0.795 to 1.190) | .79 |
| Cervical cancer mortality | 67 | 602696.5 | 11.12 (9.09 to 13.78) | 14.44 (12.68 to 16.20) | 98 | 604228.2 | 16.22 (14.05 to 18.82) | 19.83 (17.83 to 21.83) | 0.685 (0.535 to 0.878) | .003 |
| All-cause mortality | 4909 | 602696.5 | 814.51 (721.54 to 920.03) | 1340.48 (1321.18 to 1359.61) | 5275 | 604228.2 | 873.01 (778.08 to 980.08) | 1391.25 (1372.09 to 1410.41) | 0.933 (0.792 to 1.100) | .41 |
* Crude and age-adjusted rates [(AARs; adjusted for world standard population (28,29)] are per 100000 women years of observation. Probability was calculated using two-sided Pearson’s χ2 test. IRR = incidence rate ratio calculated by Poisson regression model after adjusting for cluster design; PYO = person-years of observation.