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negative binomial distribution |
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negative binomial distribution [¦neg·əd·iv bī¦nō·mē·əl ‚di·strə′byü·shən] (statistics) The distribution of a negative binomial random variable. Also known as Pascal distribution. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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To compare the mean number of vectors captured during each timed search, we used zero-truncated negative binomial regression, a method appropriate for analyses of count data in which observations of zero are excluded (19). Quantitative estimates of treatment effects relied on ordinary least squares regression for female condom use outcome expectancies, logistic regression for female condoms use in the past 90 days and intention to use female condoms, and negative binomial regression for the number of female condoms used during vaginal intercourse in the past 90 days. We obtained sex-specific and age-group-specific MN mean frequencies by fitting a negative binomial random-effects model to the MN count of each subject (Lindsey 1995). |
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