Table 2.
Parameter estimates, incidence estimates and 95% confidence intervals (based on both the original and imputed data), Lazio, Italy, 2004-2008
| Original data | Imputed data† | |||
|---|---|---|---|---|
| Repeat testers | New testers | Repeat testers | New testers | |
| r | 190 | 55 | 620 | 301 |
| p1 | 0.522 | 0.136 | 0.398 | 0.205 |
| p2 | 0.696 | 0.585 | 1 | 1 |
| Incidence estimate | 946 | 1,250 | 2,818 | 2,647 |
| (95% CI) | (857-1,035) | (966-1,534) | (2,305-3,426) | (1,739-3,593) |
| Diagnoses | 790 | 815 | 1,646 | 1,987 |
| Total incidence estimate (95% CI) |
4,968 (4,356-5,441) |
5,465 (4,538-6,461) |
||
| Estimated incidence rate* | 21.1 | 23.8 | ||
* per 100,000 person-years; estimates refer to the mean population (aged 15 or older) in the region of Lazio during the period 2004-2008.
†mean values from 20 imputations.
P3 = 202/365.25 = 0.553.
CI, Confidence Interval.