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calculate the specificity
Down syndrome +ve Down syndrome -ve Blood Test +ve 46 1300 Blood Test...
5. The Nuchal Clarity Test is a test to detect the Down syndrome (trisomy). The test...
5. The Nuchal Clarity Test is a test to detect the Down syndrome (trisomy). The test measures the liquid under the skin behind the neck of the fetus. The following table summarizes the data obtained from a sample of 1,000 pregnant women between 35 and 40 years old: T+ Down syndrome present Down syndrome absent Total (U+) (U_) 55 60 937 940 992 1000 w T_ Total (a) Calculate the false positive rate and the false negative rate of the...
A cytogenetic study of Down syndrome determined that 46 of 1021 cases were the result of transloc...
A cytogenetic study of Down syndrome determined that 46 of 1021 cases were the result of translocations. The most frequent translocation was symbolized as t(14;21). A. What does t(14;21) mean? B. How many chromosomes total would you expect to be present in a Down syndrome individual with this translocation (normal humans have 46)? C. Draw the complement of chromosomes 14 and 21 in a Down syndrome translocation individual. (Hint: they’re diploid for 14.) D. Draw the chromosomes 14 and 21...
What is the diagnosis test offered for women during pregnancy for down syndrome? What are some...
What is the diagnosis test offered for women during pregnancy for down syndrome? What are some diagnosis test offered once a baby has been born but was not diagnosed during pregnancy for down syndrome?
10) Please calculate the Sensitivity and Specificity from the 2 by 2 (Screening Test A). (2 points) Test + Test- Disea...
10) Please calculate the Sensitivity and Specificity from the 2 by 2 (Screening Test A). (2 points) Test + Test- Diseased 100 10 Not Diseased 20 80 Sensitivity Specificity How many false positives are there? (1 point) 12) Please Calculate the Sensitivity and Specificity of Screening Test B (2 points) Not D Test Positive 34 Test Negative 13 If I wanted to limit the number of false positives, which of the two screening tests would be preferred? A or B?...
10) Please calculate the Sensitivity and Specificity from the 2 by 2 (Screening Test A). (2...
10) Please calculate the Sensitivity and Specificity from the 2 by 2 (Screening Test A). (2 points) Test + Test- Diseased 100 10 Not Diseased 20 80 Sensitivity Specificity How many false positives are there? (1 point) 12) Please Calculate the Sensitivity and Specificity of Screening Test B (2 points) Not D Test Positive 34 Test Negative 13 If I wanted to limit the number of false positives, which of the two screening tests would be preferred? A or B?...
13. A newly developed DNA diagnostic test can sequence DNA obtained from a mother's blood sample...
13. A newly developed DNA diagnostic test can sequence DNA obtained from a mother's blood sample to test whether a fetus is carrying trisomy 21 (which causes Down syndrome). In mothers over 45 the chance of having a child with Down syndrome is 5%. If the test accurately detects trisomy 21 95% of the time and has false positive rate of only 2% (i.e. the fetus is incorrectly diagnosed as having trisomy 21) what is the probability that a child...
The table shows the results of a screening test of fasting blood glucose with the cut-off...
The table shows the results of a screening test of fasting blood glucose with the cut-off at 140 mg/dl. Compute the sensitivity, specificity, and positive and negative predictive values. Gold Standard for Diabetes Diagnosis Screening test Positive Negative Positive 34 20 54 Negative 116 9830 9946 150 9850 10000
Epidemiology question 3. ng the screening cut-off point affect sensitivity. specificity, PPV and NPV of the...
Epidemiology question
3. ng the screening cut-off point affect sensitivity. specificity, PPV and NPV of the test? Why? are the respective "costs" ring the screening cut-off point affect the number of false positives and false negatives associated with false positives and false negativesi ? What 5. sensitivity, PPV and NPV of the test? How would you expect raising the cut-off point to 220mg of blood glucose per 100ml to affect the specificity was repeated using the 130mg of blood glucose...
Observations with KM and Luminol After Treatment with ….. Stain Prediction (+’ve or – ‘ve before...
Observations with KM and Luminol After Treatment with ….. Stain Prediction (+’ve or – ‘ve before you test) KM Reagent 1 KM Reagent 2 Luminol 1 Substrate Control _ _ _ _ 2 Positive Control + + + + 3 Negative control _ _ _ _ 4 Undiluted Blood + + + + 5 1:10 Blood:Water _ + + _ 6 1:20 Blood:Water + + + _ 7 1:50 Blood:Water + + + _ 8 1:100 Blood:Water + _ _...
Calculate the sensitivity, specificity, positive predictive value, and negative predictive value for the Test Screen. &nbs
Calculate the sensitivity, specificity, positive predictive value, and negative predictive value for the Test Screen. Medical Assessment Test Screen Disease No Disease Total Possible Disease 30 20 50 No Disease 10 40 50 Total 40 60 100
5. The Nuchal Clarity Test is a test to detect the Down syndrome (trisomy). The test measures the liquid under the skin behind the neck of the fetus. The following table summarizes the data obtained from a sample of 1,000 pregnant women between 35 and 40 years old: T+ Down syndrome present Down syndrome absent Total (U+) (U_) 55 60 937 940 992 1000 w T_ Total (a) Calculate the false positive rate and the false negative rate of the...
10) Please calculate the Sensitivity and Specificity from the 2 by 2 (Screening Test A). (2 points) Test + Test- Diseased 100 10 Not Diseased 20 80 Sensitivity Specificity How many false positives are there? (1 point) 12) Please Calculate the Sensitivity and Specificity of Screening Test B (2 points) Not D Test Positive 34 Test Negative 13 If I wanted to limit the number of false positives, which of the two screening tests would be preferred? A or B?...
10) Please calculate the Sensitivity and Specificity from the 2 by 2 (Screening Test A). (2 points) Test + Test- Diseased 100 10 Not Diseased 20 80 Sensitivity Specificity How many false positives are there? (1 point) 12) Please Calculate the Sensitivity and Specificity of Screening Test B (2 points) Not D Test Positive 34 Test Negative 13 If I wanted to limit the number of false positives, which of the two screening tests would be preferred? A or B?...
13. A newly developed DNA diagnostic test can sequence DNA obtained from a mother's blood sample to test whether a fetus is carrying trisomy 21 (which causes Down syndrome). In mothers over 45 the chance of having a child with Down syndrome is 5%. If the test accurately detects trisomy 21 95% of the time and has false positive rate of only 2% (i.e. the fetus is incorrectly diagnosed as having trisomy 21) what is the probability that a child...
Epidemiology question
3. ng the screening cut-off point affect sensitivity. specificity, PPV and NPV of the test? Why? are the respective "costs" ring the screening cut-off point affect the number of false positives and false negatives associated with false positives and false negativesi ? What 5. sensitivity, PPV and NPV of the test? How would you expect raising the cut-off point to 220mg of blood glucose per 100ml to affect the specificity was repeated using the 130mg of blood glucose...
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