Type I and type II errors

Episodic memory has been found to be consistently impaired in AD, thus may be a reliable measure to distinguish between dementia and healthy ageing (Salmon & Bondi 2010). The RAVLT requires patients to learn a wordlist which is then recalled immediately, recalled after a delay, and lastly, a recognition test (Estévez-González et al. 2003). Although limited recall is observed in both dementia patients and healthy adults, healthy adults demonstrate significantly improved performance in the recognition

After removing the useless attributes, we are left with 640 attributes. When we retrain the Naive Bayes and J48 classifiers using this reduced dataset, we got the same accuracy as we got in A(d) that is before reducing the attributes. The accuracy of Classifiers on the reduced dataset: ⦁ Naive Bayes: Accuracy = 70.85% ⦁ J48: Accuracy = 72.95% As we can see the accuracy of both the classifiers is intact even after removing many attributes. Here we can observe that performance of both the

Think of hypothetical screening programs for diseases of interest to you; find one example of a disease where high sensitivity would be more important, and one example where high specificity would be more important. Screening programs utilize diagnostic tests on individuals who are asymptomatic of certain diseases and the intent of diagnostic tests are used to establish the probability of having a certain disease (New York State, Department of Health (n.d.). As a provider, the fundamental intention

you have surgery but in the end it turns out you did not need it? Surgical oncologist Professor Michael Baum, specialises in breast cancer treatment, and was one of the creators of the screening programme when it was set up in 1988. In the editorial “‘I set up breast cancer screening - now I’m it’s biggest critic’: Top doctor argues why mammograms ‘do more harm than good’,” published March 3rd 2016, Prof. Michael Baum speaks to the readers of the Daily Mail about the harmful risks mammograms can have

The WAIS-IV failed to produce an explanation for the psychometric bias that a person must get 6 raw scores of 1 before an FSIQ can be computed. Having this requirement constitutes as test bias. Test bias focuses on statistical prediction and can be thought of as measuring a different construct rather than the intended construct (Shultz, Whitney & Zickar, 2013). The issue of the reduced number of subtest for ages 70 to 90 can raise concerns for test fairness. Although test fairness is much harder

2.0 Body of Contents 2.1 Over-diagnosis – a common issue in many screening tests Many health screening tests tend to produce false positive results, or find abnormalities that may not cause any harm at all to the patient. This can cause distress to patients and their families and lead to unnecessary treatment. For example, around 6-10% of mammogram results are false positives, meaning the images show what appear to be tumors but are actually cysts or harmless tissues. This estimate may be higher

assist practitioners and patients decisions for specific clinical circumstances.” Evidence is always current and a generous collection of many different systematic research reviews with multiple random control trials are available (AGREE, 2000). These types of trials are graded at the top level of hierarchy (Guyatt et al 2002).Nevertheless in contrast Devereaux and Yusuf (2005) argue that top level hierarchy is not a guaranteed deviation from the truth in randomized trials. The clinical guidance used

Hypothesis Testing Paper Monica Gschwind PSY 315 June 8, 2015 Judith Geske Hypothesis testing is the process in which an analyst may test a statistical hypothesis. The methodology used by the analyst is based on the nature of the data used and the main goals of the analysis. The main goal in this is to either reject or accept the null hypothesis. Through testing, results will show that someone who may prove one answer, may not mean that answer is actually correct, for there may be

1. Abstract: Botnet is one of the most severe threat to cyberspace in the modern cyber world. In the different forms of malware, Botnets provide a base for many cybercrimes such as distributed denial of service and many others. This paper mainly focuses on the survey of botnet and its detection and some of the botnet characteristics and prevent IRC based botnets and also the simple measures to be taken to avoid the effect of botnet. In this survey, botnet detection techniques can be classified into

Ms. Smith is a 30 year old single, Caucasian female referred for a psychosocial assessment by DOC Parole Officer Ward. She reports she was released from prison 2 months ago after a 3 year sentence for attempted escape due to not notifying her probation officer of her address change. Ms. Smith states due to her past substance use history and trauma experience her referral sources ordered counseling to address complex issues related to her emotional and physical well-being. Ms. Smith reported she