Significance of Negative predictive value
Negative predictive value (NPV) is a statistical measure that determines the likelihood that a person with a negative test result does not have the condition being tested for. It's a crucial metric for assessing the reliability of diagnostic tools, indicating how accurately a negative result reflects the absence of a disease or condition. High NPV suggests the test is effective in ruling out a condition. This value is important in various fields like psychiatry and health sciences to evaluate the performance of screening tests.
Synonyms: Npv, Specificity
The below excerpts are indicatory and do represent direct quotations or translations. It is your responsibility to fact check each reference.
The concept of Negative predictive value in scientific sources
Negative predictive value (NPV) assesses diagnostic test accuracy. It represents the probability that a person with a negative test result truly doesn't have the disease. High NPV values indicate the test is reliable in ruling out the condition.
From: The Malaysian Journal of Medical Sciences
(1) This is the probability that a patient does not have a disease, given a negative test result, which is high for NPs.[1] (2) This is a statistical measure that indicates the probability that a patient does not have a disease, such as group A streptococcal pharyngotonsillitis, given a negative test result.[2] (3) Negative predictive value is a measure used to assess the accuracy of vision screening tests, indicating the likelihood that a negative result accurately identifies the absence of vision impairment.[3] (4) This indicates the likelihood that a person with a negative test result does not have the condition, which was evaluated for transcutaneous bilirubin.[4] (5) This refers to the probability that individuals with a negative test result, such as PCT, do not have the condition, providing insight into the test's ability to rule out the condition.[5]
From: South African Journal of HIV Medicine
(1) This refers to the ability of a test to correctly identify people who do not have a disease, and the β-D-glucan assay has this value.[6] (2) This refers to the test's ability to correctly identify those who do not have the disease, which was assessed in the study.[7] (3) This is a statistical measure that indicates the probability that a person with a negative test result does not have the condition, and the study determined this value for the modified HDS to evaluate its accuracy in ruling out cognitive impairment in HIV-positive patients.[8] (4) This indicates the probability that individuals with a negative test result do not have the condition, and the suicide risk screening scale had a negative predictive value of 80% at baseline.[9] (5) This is the probability that a person with a negative test result does not have the condition, and in the case of the three markers, it is 97%.[10]
From: African Journal of Primary Health Care and Family Medicine
(1) The likelihood that a person without the disease will test negative, which was 53% in this study, helping determine the test's ability to rule out malaria.[11] (2) Negative predictive values indicate the probability that a patient with a negative test result does not have the disease, which is useful in ruling out conditions.[12] (3) This is a measure used to determine how accurately a negative test result correctly identifies the absence of a condition, and it was calculated for both the 5.0 mL and 2.0 mL specimens.[13] (4) The VIAC is known to have a high negative predictive value in primary care settings (at least 96 % ), and therefore these low rates on follow-up suggest that cancers were successfully treated.[14] (5) This is the Zulu PEDS' ability to correctly identify non-referrals, and was lower at 75% in the study for outcome 1.[15]
From: South African Family Practice
(1) This is the probability that individuals who test negative for a condition, like intimate partner violence, do not have the condition, and it is used to assess the accuracy of a screening tool.[16] (2) NPV is the probability that a patient does not have microalbuminuria if the test result is negative, and the study calculates this value for the HemoCue and Clinitek systems, and it shows the tests' accuracy.[17] (3) This is a measure indicating the probability that patients with a negative test result are truly free of the disease, and the study also assessed this value at different free prostate-specific antigen ratio cut-offs.[18] (4) This is better in HPV-based primary screening than cytology, according to the South African Society for Obstetricians and Gynaecologists’ opinion.[19]
From: International Journal of Pharmacology
(1) This value, at 57.89%, suggests that a negative BDG test result is less certain in ruling out a PFI.[20] (2) A measure of diagnostic accuracy indicating the probability that a negative test result correctly indicates the absence of the condition.[21] (3) A measure of diagnostic test performance, which is not significantly affected when combining GM and BG tests.[22]
From: Journal of Public Health in Africa
(1) This is the probability that a person with a negative test result does not have the disease, and is used to evaluate the reliability of a diagnostic test for typhoid fever.[23] (2) This value, along with the positive predictive value, is an extrinsic performance indicator used to assess the SD Bioline HAT for detecting serological cases of HAT.[24]
From: South African Journal of Physiotherapy
(1) This is the probability that an infant does not have a gross motor impairment, which provides information about the study cohort and is more relevant than sensitivity and specificity when screening infants.[25]
From: Onderstepoort Journal of Veterinary Research
(1) These are values of a normal leukocyte count and platelet count for the exclusion of co-infection with Ehrlichia spp., as described.[26]
From: South African Journal of Psychiatry
(1) This is the probability that a person does not have a condition, like a substance use disorder, given a negative test result, and it was used to evaluate the performance of the screening test.[27] (2) A statistical measure that indicates the probability that individuals who test negative for depression actually do not have the condition, according to the tool.[28] (3) The negative predictive value indicates the likelihood that individuals with a negative test result do not have the disorder, and in this study, it was found to be 99.2%.[29] (4) Negative predictive value (NPV) is a statistical measure that indicates the likelihood that a person who screens negative for a condition does not have the condition. The document discusses the NPV of the screening tools.[30] (5) This is a measure of the Montreal Cognitive Assessment Test, indicating the likelihood that a negative result correctly identifies individuals without mild cognitive impairment.[31]