1. The usefulness of a screening test depends upon itsSpecificityPredictive valueReliabilitySensitivityQuestion 1 of 20 2. While calculating Infant mortality rate, which of the following is not includedNatal deathPerinatal deathPostnatal deathStill birthQuestion 2 of 20 3. World Anti Tobacco Day is?5/31/20161 Novemeber04-07-20161st DecQuestion 3 of 20 4. Developing an answer or a solution to an already known problem or a question which can be quantified and analysed is known as:Hypothesis formulationStatistical analysisAnalysis and interpretationData collectionQuestion 4 of 20 5. Scalogram is another name forLikert ScaleThurstone scaleSenatic Differential ScaleGuttman ScaleQuestion 5 of 20 6. Eradication is defined as:Termination of all man to man transmission of agentCessation of disease progression in a local geographical areaTreatment of all patients with the diseaseInterruption of transmission of diseaseQuestion 6 of 20 7. A Path finder survey for oral health needs to be done at 12 sites for 4 index age groups at each site. What should be the sample size for the survey30040012001500Question 7 of 20 8. In national water supply and sanitation program, a 'Problem village' is defined as all exceptWater source has excess of iron, fluoride and heavy metalsDistance of safe water source is more than 1.6.kmWater is available at a depth of more than 15 metersWater is infested with guinea wormsQuestion 8 of 20 9. Which one of the following is a good index of the severity of an acute disease?Standardized mortality ratio.Cause specific death rate.Five year survival.Case fatality rate.Question 9 of 20 10. A child shows skeletal fluorosis when he is drinking water for a long time with excess fluoride level of:0.5-1 ppm1-1.5 ppm3-6 ppm1.5-3 ppmQuestion 10 of 20 11. Which epidemiological study gives the most accurate result?Cross-sectional studyCohort studyMeta analysisRandomized control trial with double blindingQuestion 11 of 20 12. Screening of oral cancer comes under which level of prevention:TertiaryPrimordialSecondaryPrimaryQuestion 12 of 20 13. Student t test - true is?Mean is similarSample is smallSD is similarNumber of observation in sample is sameQuestion 13 of 20 14. All of the following are applications of knowing the incubation period of a disease exceptTo prevent infection amongst contacts of the infected personTo differentiate among secondary cases and co-primary casesTo determine the period of isolationTo determine the period of quarantineQuestion 14 of 20 15. An investigator observes that five independent risk factors influence the occurance of a disease. Which of the following statistical tests should be applied to assess the relationship between these 5 risk factors and the occurance of disease:Multiple Logistic RegressionOne way analysis of VarianceANOVAMultiple Linear RegressionQuestion 15 of 20 16. Which of the following types of bias can be reduced by allowing equal interview timeBerkesonian biasRecall biasSelection biasInterviewer biasQuestion 16 of 20 17. Comparing means of 3 different groups or datasets is best done by using:Kruskal wallisOne-way ANOVAt testChi square testQuestion 17 of 20 18. Meta-analysis is helpful in dentistry to:Define who is at risk of diseaseGuide statistical testing for clinical proceduresProvide quantitative summary measure from many studiesDecreases publication biasQuestion 18 of 20 19. Best method to compare new test and gold standard testCorrelation studyRegressive studyBland and Altman analysisKolmogorov-Smimov testQuestion 19 of 20 20. Ability of the test to correctly identify those who have disease:ReliabilitySensitivityAccuracySpecificityQuestion 20 of 20 Loading...