NDLI: Confidence intervals for the difference of two proportions estimated from pooled samples

Content Provider	Springer Nature Link
Author	Biggerstaff, Brad J
Copyright Year	2008
Abstract	This article presents confidence intervals for the difference of two binomial proportions estimated from pooled samples with unequal pool sizes. Asymptotic methods are used to derive Wald, profile score, and profile likelihood ratio intervals. Corrections for bias and skewness of the distribution of the Studentized score statistic are used to improve the profile score interval. Further, the easily computed Wilson score-based interval of Newcombe is adapted. Coverage and noncoverage probabilities and expected lengths of the confidence intervals are estimated for a range of parameter values expected in application, for both one- and two-sample cases. The skewness-corrected profile score interval is generally recommended. The methods are applied to a comparison of West Nile virus mosquito infection prevalences by trapping height in field collections from Louisiana in 2003.
Starting Page	478
Ending Page	496
Page Count	19
File Format	PDF
ISSN	10857117
Journal	Journal of Agricultural, Biological, and Environmental Statistics
Volume Number	13
Issue Number	4
e-ISSN	15372693
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Binomial Group testing Profile likelihood Profile score Score West Nile virus Statistics for Life Sciences, Medicine, Health Sciences Agriculture Environmental Monitoring/Analysis Biostatistics
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Statistics and Probability Environmental Science Agricultural and Biological Sciences Statistics, Probability and Uncertainty

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