NUR-MED BIOSTATS PREDICTORUPDATED EXAMQUESTIONSANDANSWERS 100%A+GRADED

NUR-MED BIOSTATS PREDICTORUPDATED EXAMQUESTIONSANDANSWERS 100%A+GRADEDwhich one of the following can be used for data analysis in Cross sectional? 1. Odds ratio 2. Relative risk 3. Chi square test *** 4. Attributable risk and Chi square test 5. odds ratio and attributable risk cross sectional: use CHI SQUARE Cohort: use RR or AR Case control: use ODD's RATIO Which is the best study to find out the state of Vitamin D deficiency in Australia? a..cohort b..case control c..case study d..Cross-‐sectional study.*** For Prevalance Cross Sectional Study ..... to check incidence Cohort .... So D here Two groups are being studied for risk reduction for some disease with aspirin use. Tables are givenasfollows. Aspirin used aspirin not used Got disease 10 20 Disease free 990 980 Calculate NNT for this? a. 10 b. 100 *** c. 1000 its incidance 10 among 1000 population right so inverse of it is 1000/10=100 The question says 10 got disease amongst 1000 people who used aspirin and 20 amongst those who did not use it so take the total number which is 1000/ 10 = 100 is ur ans. ONLYSTUDENTS STORE 2025 ALL THE BESTONLYSTUDENTS STORE 2 DONOT COPYIn a village of 3000 people, 500 get Congo Hemorrhagic fever. 450 eventually recover fromthe disease in the next 4 weeks while 50 died. What is the case fatility rate for this disease?1. 10 *** 2. 20 3. 35 4. 50 5. 200 Case fatality rate = # of deaths from a specific cause / total number of cases with same disease... 50 / 500 = 10 (A) You are a doctor in a town ,where 6people out of 100 are non smoker.What are the chances of chances of stroke in smoker is 50%more than non smoker .Nowthe pharmaceutical company is introducing a medicine which reduces the chances of stroke upto 1/3rd in smoker population .What is the percentage of the stroke populationwill get stroke a)3% b)6% *** c)9% d)12% e)20% 6/100 = 6%, 6*1.5 = 9 , 1/3rd reduced so 9/3 = 3, = 9-3 = 6% 9/3 is to calculate reduction which is 1/3 so 9/3. Final level is if you substract the 1/3 reduction from the 50% increased incidence that will give you final incidenceor prevalence whatever is asked in the stem. just take it as in general population this risk is 6/100 ... for smokers it turns to be 9/100 as gnrl population has 50% less thn smokers... so in smokers risk is reduced to one third ... so we ll take1/3rd of 9 which ll be 3 nd subtarct it from orignal risk of 9 in smokers nd v ll be left wid 6  In a small village of North QLD with a community of 3000 people, 18%females get URTI while 22% males get it as well who are exposed to factory smoke. 10%of females also get URTI who live away from the factory and are not exposed tofactory smoke. The data for males is not available. Calculate the attributableriskforfemales to get URTI due to factory smoke? 1. 28% 2. 30% ONLYSTUDENTS STORE 2025 ALL THE BESTONLYSTUDENTS STORE 3 DONOT COPY3. 6% 4. 1.8% 5. 8% *** ARR =risk in exposed Group - risk in Unexposed group So 18 - 10 = 8%A study wish to make a relation btw the fatigue in track car driver in high ways &theincidence of MVA happen. wt is the most suitable method to carry out study? a, cohort b, case control *** c, RCT D,cross sectional E,case study least imp study to look for effectiveness of ccf Rx? a,case control b, case series *** c, cohort d,RCT e, Systemic Review  What is the best method of study for studying the relation between fatigue andaccident in truck driver? a. RCT b. Cohort c. A retrospective case-control study *** d. Case report e. systemic review You find there are more and more diabetics in your practice and you want todoaresearch about how many people are diabetic. What is the best study design? a. Cohort study b. Case-control study ONLYSTUDENTS STORE 2025 ALL THE BESTONLYSTUDENTS STORE 4 DONOT COPYc. Randomized-control trial d. Cross-section study *** If you need to study whether smoking causes myocardial infarction, what kindof study / group do you intend to conduct/study? A) Cohort *** B) Randomized Controlled C) Case Control D) Case series E) Observational least imp study to look for effectiveness of ccf Rx? a,case control b, case series *** c, cohort d,RCT e, Systemic Review A study wish to make a relation btw the fatigue in track car driver in high ways &the incidence of MVA happen. wt is the most suitable method to carry out study?a, cohort b, case control *** c, RCT D,cross sectional E,case study A young scientist has decided to study the causes of neonatal jaundice. He selects 150 babys withjaundice and 150 without, and examines there previous historiies looking for factors that could havedetermined there jaundice. This kind of study is called? a.) cohort study b.) case study c.) case control study *** d.) prospective study ONLYSTUDENTS STORE 2025 ALL THE BESTONLYSTUDENTS STORE 5 DONOT COPYin case control you choose a group with the disease, and then you choose a control groupwithout the disease and then you follow them retrospectively C A scientist study a case which is 30% fpv, 10% of the test shows 100people are +ve for the is the actual number of people getting the disease for thepeople who did testing? a, 10 b, 20 c, 30 d, 70 *** e,90 here we say that 100 are positve for the test (TP+FP). of these 100 30%are FPV which means that TP (70) and FP (30). Then we have remaining 1000 of which 10%are FN, this comes out as100. Then lastly we have T- (900). So the 2x2 table is TP (70) FP (30) F- (100) T- (900). Nowwewant to know the positive predictive value (likelihood that a positive result in test indicates disease). Formula is (TP/(TP+FP)). so (70)/(70+30)=70% You want to make a study about asthmatic patients and if there have been any exposure to smoke or its severity to exposure to smoke. What study is the most appropriate? a. Case control *** b. Cross sectional c. Cohort d. Observational study A study is being planned to investigate the effect of environmental exposure to pesticides onthe incidence of cancer. Which of the following study designs is most appropriate? 1.Case-control study 2.Case series 3.Cohort study *** 4.Cross-sectional survey