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The dependence of kappa on trait prevalence and on the marginal totals in the cross-tabulation used in its calculation predisposes kappa to two paradoxes.
We chose to calculate both these statistics as the more commonly used kappa may be misleading as trait prevalence varies [15], [16].
The penetrance for non-susceptible genotypes (phenocopy) under each model was arbitrarily set to one-tenth the birth cohort trait prevalence for that age category, and the penetrance for the susceptible genotypes was set to 1 since we analyzed only affected subjects.
Data were also compared with a previous analysis in order to evaluate the effects of trait prevalence.
The commonest hemoglobinopathy in our population, β-thalassemia trait (prevalence <4% in our population) (25, 26), cannot explain our results because it would reduce the HbA1c concentrations.
Trait prevalence here was calculated based on the number of positive cases, as judged by both raters, then calculated as a percentage of the total number of cases, and inter-rater reliability (Tables 3, 4 and 5).
Similar(52)
Our simulation results suggest that such contradictory results [ 16, 30] are statistical variations of resistance traits prevalence in long-term disuse of antibiotics.
We did not exclude cases with hemoglobinopathy, including the thalassemia trait, since prevalence of hemoglobinopathy in Japan is quite low ranging from 1 per 2,500 to 1 per 4,000 [ 15].
Three separate MED traits with prevalence over 3% obtained a heritability ≥0.05: General clinical mouth findings (overrepresented by wolf teeth) at 0.09, parrot mouth at 0.09, and skin sarcoids at 0.05, all with s.e. of 0.01 0.02.
In addition, three meaningful clusters of youths could be identified, with the combined RA and PA cluster including the most severe boys in terms of aggression, anger, delinquency, alcohol and drug use, psychopathic traits, and prevalence rates for CD and SUD.
We used generalized linear models to examine how changes in these parameters influence trait extinction, equilibrium prevalence and time to equilibrium.
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