IGNOU MSTE-004 Solved Assignment 2023 | PGDAST

Details For MSTE-004 Solved Assignment

IGNOU MSTE-004 Assignment Question Paper 2023

Get ahead in your IGNOU PGDAST Course studies with confidence by reviewing the MSTE-004 assignment questions before buying the expert-written solution from our app. Quick Search Section in our app makes it easy to double-check the year and session validity of the IGNOU assignment solutions, ensuring that you avoid any confusion. Our aim is to provide you with the most accurate and up-to-date IGNOU assignment solutions for PGDAST, and our expert-written assignments are unmatched by any other website. So, before making your purchase, take a moment to review the MSTE-004 assignment questions and ensure they match your needs. With our attention to detail and expertise, you can trust that you’re getting the right IGNOU assignment solution for your specific needs.

1. State whether the following statements are True or False. Give reason in support of your answer:

(a) The value of sensitivity of the following results of a diagnostic test is $$0.85$$.

 Disease Test result Total + − Present 170 30 200 Absent 20 280 300

(b) For the following cohort study, the relative risk for the lung cancer among smokers is $$3.5$$.

 Lung Cancer No Lung Cancer Total Smokers 100 1220 1320 Non-smokers 50 2260 2310

(c) The logit link function is $$\log [-\log (1-\pi)]$$.

(d) We define three indicator/dummy variables for a regressor variable with three categories.

(e) Left censoring occurs whenever the exact time of occurrence of an event is not known.

2. Differentiate between Chi-square tests for association and homogeneity of proportions. Also mention the assumptions of these tests.

3. A random sample of 250 patients was selected and their workout timing and diabetes status were recorded. The following table shows the workout timing and severity of diabetes:

 Workout (in minutes) Severity of diabetes status Low Moderate High 0−15 06 27 19 15 to 30 08 36 17 30 to 45 21 45 33 245 14 18 06

Test at $$5 \%$$ level of significance whether workout habit and diabetes are associated with to each other or not.

4.(a) Explain the assumptions underlying multiple linear regression model.

(b) Suppose a researcher wants to evaluate the effect of cholesterol on the blood pressure. The following data on serum cholesterol (in $$\mathrm{mg} / \mathrm{dL}$$ ) and systolic blood pressure (in $$\mathrm{mm} / \mathrm{Hg}$$ ) were obtained for 15 patients to explore the relationship between cholesterol and blood pressure:

 S. No. Cholesterol (mg/dL) SBP (mm/Hg) 1 300 150 2 410 270 3 380 210 4 530 310 5 570 350 6 490 310 7 340 210 8 320 150 9 280 110 10 550 320 11 340 220 12 350 170 13 410 260 14 390 230 15 450 270

(i) Fit a linear regression model using the method of least squares.

(ii) Construct the normal probability plot for the data on serum cholesterol and systolic blood pressure.

(iii) Test the significance of the fitted regression model.

5. Write a short note on the following:

(i) Polytomous logistic models

(ii) Poisson regression

(iii) Kaplan and Meier method

6. The following data on diagnosis of coronary heart disease (where 0 indicating absence and 1 indicating presence), serum cholesterol (in $$\mathrm{mg} / \mathrm{dl}$$ ), resting blood pressure (in $$\mathrm{mmHg}$$ ) and weight (in $$\mathrm{kg}$$ ) were obtained for 80 patients to explore the relationship of coronary heart disease with cholesterol and weight.

 S. No. Serum Cholesterol (mg/dl) Weight (kg) Number of Patients having CHD Total Number of Patients 1 420 60 10 20 2 450 68 15 30 3 400 54 4 15 4 510 74 2 10 5 480 62 1 5

(i) Fit a multiple logistic model for the dependence of coronary heart disease on the average serum cholesterol and weight considering $$\hat{\beta}_{0}^{0}=4.279, \hat{\beta}_{1}^{0}=-0.035$$ and $$\hat{\beta}_{2}^{0}=0.172$$ as the initial values of the parameters (solve only for one Iteration).

(ii) Test the significance of the fitted model using Hosmer-Lemeshow test at $$5 \%$$ level of significance.

7.(a) Describe censoring and differentiate between different types of censoring with the help of examples which are not considered in Block 4 of MSTE-004.

(b) A study was conducted on 185 patients aged more than 45 years which are followed until the time of death or up to 10 years, whichever comes first. The patients have different covariates: age, gender (male/female), systolic blood pressure, smoking (yes/no), total serum cholesterol and diabetes (yes/no). The objective of this study is to determine which covariate influences the survival time. An analysis is conducted to investigate differences in all-cause mortality between men and women participating in the study. Suppose we obtain the following results after applying the Cox regression hazard model analyses:

 Risk Factor Parameter Estimate SE Age 0.150 0.010 Gender 0.450 0.150 Systolic Blood Pressure 0.015 0.008 Smoking 0.650 0.170 Total Serum Cholesterol 0.002 0.004 Diabetes −0.350 0.250

(i) Obtain hazard ratio and interpret the results.

(ii) Find the $$99 \%$$ confidence interval for the hazard ratio.

(iii) Test whether the covariates are significant or not at $$1 \%$$ level of significance.

$$\operatorname{cosec}^2 \theta=1+\cot ^2 \theta$$

MSTE-004 Sample Solution 2023

Take a look at our sample solution of MSTE-004 Solved Assignment 2023 | PGDAST to get a feel for the top notch and accuracy of our IGNOU assignment solution. This sample solution is just one example of how we can help you with your IGNOU assignments, and we’re happy to present it as proof that we always produce high-quality work done by subject matter experts. Our assignments are solved by experts from multiple universities, unlike other sites that provide copied or stolen study materials. By doing so, we can guarantee that you will receive solutions that are both original and accurate, providing you with the knowledge you need to succeed academically. Don’t take our word for it; have a look at a sample of our MSTE-004 Solved Assignment 2023 | PGDAST now and see for yourself. You’ll have the advantage you need to excel in your IGNOU studies with our expert-written assignments.

$$cos\left(\theta -\phi \right)=cos\:\theta \:cos\:\phi +sin\:\theta \:sin\:\phi$$

Price - 351 Rs.

Insert math as
$${}$$