Sensitivity and specificity

Introduction According to Farlex partner Medical Dictionary (2012), Screening is the “Examination of a group of usually asymptomatic people to detect those with a high probability of having a given disease, typically by means of an inexpensive diagnostic test”. Screening is a strategy used to identify the disease in earlier stage even if the symptoms are not seen in the person. Drug and alcohol screening in employees is used to identify the total cases who are in drugs and alcohol addiction and…

BLOOD VESSEL SEGMENTATION IN RETINAL FUNDUS IMAGES USING PRE-PROCESSING AND ITERATIVE REFINEMENT Ms.A.Rajapackiam PG Scholar, Department of Computer Science and Engineering, Chandy college of Engineering, Mullakadu,Thoothukudi(T.N)India. rajiamrose91@gmail.com Mr.L.Arokia Jesu Prabhu AP/CSE , Department of Computer Science and Engineering, Chandy college of Engineering, Mullakadu,Thoothukudi(T.N)India. jlplazer@gmail.com ABSTRACT Automatic diagnosis of several diseases such as Diabetic…

multiplexing, 2-plex and 8-plex sequencing, were being employed to study. With 2-plex protocol, trisomy 21 fetuses were detected at 100% sensitivity and 97.9% specificity. The 8-plex protocol, trisomy 21 fetuses were detected at 79.1% and 98.9% specificity. This allows fetal trisomy 21 to be identified in high-risk pregnancies with high sensitivity and specificity, and more accurate. With this cell-free fetal DNA technique, it assists to detect disorders a lot quicker because cell-free fetal DNA…

nonverbal communication used for social interaction such as eye contact, hand gestures or facial expressions. a. Ask the parent how the child is doing in school and if there is any difficulty with learning or issues in school performance. B. In category B: There must be some sort of repetitive patterns of behavior, interests, or activities as evidenced by at least 2 of the following: 1. Repetitive or stereotyped motor movements us of toys or objects such as lining up toys,…

of other diseases, such as those that impair the lung parenchyma and can cause dyspnea (Hoette et al., 2010). On chest CT, enlargement of the main pulmonary artery to a diameter of 29 mm or greater was associated with a high sensitivity (84%), specificity (75%), and positive predictive value (95%) in a heterogeneous group of patients with chronic lung disease (Tan et al., 1998). However, CT findings may be less reliable in patients with interstitial pulmonary fibrosis (IPF) (Zisman…

diabetes in the long run. One of the best statistical ways to measure accuracy and usability of a test is looking at the sensitivity and specificity of the test. These values are obtained by comparing the number of results to another gold standard test. In the case of HBa1c, these values are compared to fasting blood glucose level. HBa1c of 6.5% has 75% sensitivity and 85% specificity for diabetes.1 These values can increase in individuals that are obese or from certain races such as Hispanic or…

Introduction: Computed tomographic angiography (CTA) is recommended as a non-invasive test to determine the presence and severity of coronary artery disease (CAD). Aim of this study was to assess the accuracy of 256 slice CTA compared with invasive catheter angiography(ICA) in the diagnosis of significant CAD. Methodology: A prospective observational study in patients suspected of having CAD and undergoing both CTA and ICA for evaluation. Patients with coronary stents or surgical grafts were…

Utility of Fine Needle Aspiration in Diagnosing Breast lesions among Sudanese Females. A Cyto - Histological correlation. Aghapy E. Siddig, Emmanuel E. Siddig, Ali Edreis, Ahmed H. Fahal. Introduction: Dramatically, Breast cancer is the most commonly diagnosed cancer among women worldwide, and is ranked second only to lung cancer as the leading cause of cancer deaths (Jemal et al., 2009). Although, the incidence of breast cancer in Sub-Saharan African counties is low compared that in developed…

monitoring mode using electron impact ionization. Pregabalin was extracted from plasma by protein precipitation with acetonitrile. The extraction recovery ranged from 60.23-73.19 %. The GC-MS method was validated and the validation parameters; specificity, limit of quantitation (LOQ) and detection (LOD), linearity, recovery,…

adults and in three independent samples, both clinical and controls from the Netherlands and the UK. ROC analysis showed that AQ has an excellent accuracy in distinguishing ASD in individuals with ASD from controls (r=.97), as well as a sensitivity of .97 and a specificity of .82, respectively. Moreover, it has been shown to have acceptable to good internal consistency ranging from .79 to .86 (Hoekstra et al.…