1. Space maintainers belong to which level of preventionHealth promotionDisability limitationSpecific protectionPrimary preventionQuestion 1 of 20 2. Which amongst the following is simplest most commonly used to describe the variation in a quantitative sampleStandard deviationModeMeanRangeQuestion 2 of 20 3. The purpose of double blinding in clinical trials is toAvoid observer and subject biasAvoid observer biasAvoid subject biasAchieve comparability between study and controlQuestion 3 of 20 4. Shortest incubation period is seen in:InfluenzaHepatitis BHepatitis ARubellaQuestion 4 of 20 5. According to Dunning classification, the screening procedure only using tongue depressor and available illumination inspection in school children and to identify the treatment needsType 1Type 2Type 4Type 3Question 5 of 20 6. Disinfectant used for blood spillsSodium hypochloriteEthanolGlutaraldehydePhenolQuestion 6 of 20 7. Iceberg phenomenon differentiatesApparent & inapparentDiagnosed and undiagnosedSymptomatic & asymptomaticCases & carriersQuestion 7 of 20 8. All the following indicators are included in physical quality of life Index (PQLI) exceptLife expectancy at age oneInfant mortality ratePer capita incomeLiteracy rateQuestion 8 of 20 9. Which of the following statements about confidence limits/ interval is true:95% confidence interval will cover 2 standard errors around the meanSmaller the confidence level larger will be the confidence intervalSample size does not affect the confidence intervalLess variable the data, wider will be the confidence intervalQuestion 9 of 20 10. The proportion of the population which is included in the study sample is called asSampling fractionTarget populationSampling frameReference populationQuestion 10 of 20 11. Provision of integrated preventive, curative and promotional health services are part ofPrimary healthcare systemBasic health careComprehensive health care systemUniversal healthcareQuestion 11 of 20 12. Standard error of mean is calculated bySD/ ?nMean/SDSD/meanSD/nQuestion 12 of 20 13. Richest source of vitamin D isEggMilkFish oilGreen leafy vegetablesQuestion 13 of 20 14. Late expanding stage of population in India is due to?Death rate declines more than birth rateBirth rate is less than death rateBirth rate declines, death rate sameBirth rate stationary, death rate continues to fallQuestion 14 of 20 15. In an epidemiological study, the first case which comes to the attention of the investigator isIndex casePrimary caseReference caseSecondary caseQuestion 15 of 20 16. 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 survey12001500300400Question 16 of 20 17. A standard z score is related to?Score which is away from medianNone of the aboveScore which is away from meanMeasure of central tendencyQuestion 17 of 20 18. Which one of the following is a good index of the severity of an acute disease?Case fatality rate.Five year survival.Cause specific death rate.Standardized mortality ratio.Question 18 of 20 19. Xylitol isCaloric sweetenerLow caloric natural sweetenerLow caloric artificial sweetenerNon caloric sweetenerQuestion 19 of 20 20. Test used to represent difference in heights of students in two different classes in schoolChi squarePaired T testUnpaired t testANOVAQuestion 20 of 20 Loading...