1. Power of a statistical test indicatesThe ability of a test to accept a null hypothesis when it is trueThe ability of a test to accept a null hypothesis when it is falseThe ability of a test to reject a null hypothesis when it is falseThe ability of a test to reject a null hypothesis when it is falseQuestion 1 of 20 2. Concentration of fluoride in salt225ppm9Oppm275ppm250ppmQuestion 2 of 20 3. 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 Linear RegressionMultiple Logistic RegressionANOVAOne way analysis of VarianceQuestion 3 of 20 4. In a study done for the evaluation of prevalence of caries in a given population, the ratio of its standard deviation to the mean of data is calledStandard error of meanCoefficient of skewnessCoefficient of varianceStandard variationQuestion 4 of 20 5. Diameter of adult tooth brush range0.007-0.0150.004-0.0070.010-0.0120.006-0.009Question 5 of 20 6. In a demographic cycle, If death rate is declining but there is no increase in birth rate this population is called asHigh stationaryEarly expandingDecliningLow stationaryQuestion 6 of 20 7. Tetracycline is used in prophylaxis of which of the following diseasesMeningitisCholeraBrucellosisLeptospirosisQuestion 7 of 20 8. Parametric test are all exceptPearson correlationZ testChi-square testPaired testQuestion 8 of 20 9. Reference ages for pathfinder survey:6 yrs, 12 yrs, 35-44 yrs, 65-74 yrs5 yrs, 12 yrs, 35-44 yrs, 65-74 yrs7 yrs, 12 yrs, 35-44 yrs, 65-74 yrs3 yrs, 12 yrs, 35-44 yrs, 60-74 yrsQuestion 9 of 20 10. According to concept of primary health centre hilly areas cover a population of20000-1000005000030000Question 10 of 20 11. Order of disease isDHIImpairment (I) Disability (D) Handicap (H)HDIDIHQuestion 11 of 20 12. Which of the following best reflects the highest level of community participationIntervention based on assessment of communityPlanning of intervention by communityCommunity supports and cooperates with workersProvision of resources by communityQuestion 12 of 20 13. The no. of death due to oral carcinoma divided by mid-year population?Crude death rateProportional death rateSpecific death rateCase fatality rateQuestion 13 of 20 14. In a dental clinic, auxiliary perform duties after personal diagnosis and direction of dentist and patient is sent after his clearance comes underDirect guidance/ supervisionPersonal guidance/ supervisionGeneral guidance/ supervisionIndirect guidance/ supervisionQuestion 14 of 20 15. Incidence rates can be calculated byCase control studyCross sectional studyCross over studyCohort studyQuestion 15 of 20 16. Which of the following characteristics is not of much importance in a screening testHigh sensitivityHigh specificityLow costHigh safety marginQuestion 16 of 20 17. Student t test - true is?SD is similarMean is similarSample is smallNumber of observation in sample is sameQuestion 17 of 20 18. Bias can be eliminated by all except:Multivariate analysisMatchingBlindingRandomizationQuestion 18 of 20 19. Which of the following conditions does not have a National Screening / Control Programme?Diabetes MellitusRefractive errorsCarcinoma cervixDental cariesQuestion 19 of 20 20. The purpose of double blinding in clinical trials is toAvoid observer biasAvoid observer and subject biasAvoid subject biasAchieve comparability between study and controlQuestion 20 of 20 Loading...