Volume 14, Number 6—June 2008
Underreporting of Human Alveolar Echinococcosis, Germany
|Models†||df||AIC||x||N||95% CI for N|
|Saturated: Interaction (RKI, EER) and (RKI, PAS) and (EER, PAS)||0||0.00||174||288||129–2020|
|Interaction (RKI, EER) and (RKI, PAS)||1||–1.49||83||197||143–358|
|Interaction (RKI, PAS) and (EER, PAS)||1||–1.33||70||184||148–253|
|Interaction (RKI, EER) and (EER, PAS)||1||–1.66||285||399||189–1961|
|Interaction (RKI, PAS)||2||–3.33||70||184||150–242|
|Interaction (RKI, EER)||2||–1.57||134||248||171–430|
|Interaction (EER, PAS)||2||–0.08||93||207||163–287|
|Independent (no interactions)||3||–1.94||89||203||163–268|
*RKI, Robert Koch Institute; EER, European Echinococcosis Registry; PAS, pathologists’ survey; df, degrees of freedom; AIC, Akaike Information Criterion (measures how well the model fits the data [small values indicate a better fit]); x, estimate of unascertained cases; N, estimate of total number of cases (total number of observed cases + x); CI, goodness-of-fit–based confidence interval.
†Each model includes all first-order terms. The first model (saturated) adjusts for dependencies between all 3 source pairs; the second model adjusts for possible dependencies between RKI and EER, and between RKI and PAS, etc.