Testing for a Zero Proportion

نویسندگان

  • Jonathan R. Bradley
  • David L. Farnsworth
چکیده

Tests for a proportion that may be zero are described. The setting is an environment in which there can be misclassifications or misdiagnoses, giving the possibility of nonzero counts from false positives even though no real examples may exist. Both frequentist and Bayesian tests and analyses are presented, and examples are given.

منابع مشابه

Modeling Nonnegative Data with Clumping at Zero: A Survey

Applications in which data take nonnegative values but have a substantial proportion of values at zero occur in many disciplines. The modeling of such “clumped-at-zero” or “zero-inflated” data is challenging. We survey models that have been proposed. We consider cases in which the response for the non-zero observations is continuous and in which it is discrete. For the continuous and then the d...

متن کامل

O-30: Novel Interventions to Reduce ReInfection in Women with Chlamydia: A Randomised-Controlled Trial

Background: To determine if postal testing kits (PTK) and patient delivered partner therapy (PDPT) for managing sexual partners of women with Chlamydia tracho-matis, reduce re-infection rates in women, compared to partner notification by patient referral. Materials and Methods: Three hundred and thirty women testing positive for chlamydia, at clinics for genitourinary medicine, family planning ...

متن کامل

Proportion of non-zero normal means: universal oracle equivalences and uniformly consistent estimators

Since James and Stein’s seminal work, the problem of estimating n normal means has received plenty of enthusiasm in the statistics community.Recently, driven by the fast expansion of the field of large-scale multiple testing, there has been a resurgence of research interest in the n normal means problem. The new interest, however, is more or less concentrated on testing n normal means: to deter...

متن کامل

شناسایی سویه های مقاوم به اتامبوتول مایکوباکتریوم توبرکلوزیس به روش MAS-PCR و مقایسه آن با روش proportion

Background and purpose: Ethambutol (EMB) is one of the first - line drugs used for anti-tubercular therapy but resistance to this medicine is developed in many parts of the world. EMB resistant strains commonly have embB mutations. Purpose of this research was detection of EMB-resistant Mycobactercium tuberculosis strains isolated from patients by MAS-PCR method and comparison with Proportion...

متن کامل

A New Class of Zero-Inflated Logarithmic Series Distribution

Through this paper we suggest an alternative form of the modified zero-inflated logarithmic series distribution of Kumar and Riyaz (Statistica, 2013) and study some of its important aspects. The method of maximum likelihood is employed for estimating the parameters of the distribution and certain test procedures are considered for testing the significance of the additional parameter of the model. ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

متن کامل
عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2013