EPIDEMIOLOGY

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Epidemiological Tools , Association and Causation , Screening for Disease

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JJMMC RESEARCH

India

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EPIDEMIOLOGYVersión en línea Epidemiological Tools , Association and Causation , Screening for Disease por JJMMC RESEARCH 1 A screening test has high sensitivity. It means a Few false positives b Few false negatives c High specificity d High predictive value 2 The most common cause of nephrotic syndrome in children is: a FSGS b Membranous nephropathy c Minimal change disease d gA nephropathy 3 In a normal distribution, mean = median = mode. This distribution is: a Skewed b Symmetrical c Bimodal d Random 4 Which statistical test is used to compare means between two groups? a Chi-square test b t-test c ANOVA d Regression 5 In a cohort study, smokers had a lung cancer incidence of 40/1000, non-smokers had 10/1000. What is the relative risk? a 2 b 3 c 4 d 5 6 Incidence in exposed = 50/1000 Incidence in non-exposed = 20/1000 What is attributable risk? a 10 b 20 c 30 d 50 7 A researcher concludes that obesity causes diabetes after showing obese individuals developed diabetes later. Which essential causation criterion is satisfied? a Strength of association b Temporality c Plausibility d Coherence 8 A cancer screening program shows increased survival but no change in mortality. Which bias? a Length bias b Lead-time bias c Selection bias d Confounding 9 A test has: Sensitivity = 90% Specificity = 80% What is Positive Likelihood Ratio (LR+)? a 2.5 b 3.5 c 4.5 d 5 10 A study finds alcohol consumption associated with lung cancer, but after adjusting for smoking, association disappears. This is: a Effect modification b Bias c Confounding d Random error

EPIDEMIOLOGYVersión en línea

Epidemiological Tools , Association and Causation , Screening for Disease

por JJMMC RESEARCH

A screening test has high sensitivity. It means

Few false positives

Few false negatives

High specificity

High predictive value

The most common cause of nephrotic syndrome in children is:

FSGS

Membranous nephropathy

Minimal change disease

gA nephropathy

In a normal distribution, mean = median = mode. This distribution is:

Skewed

Symmetrical

Bimodal

Random

Which statistical test is used to compare means between two groups?

Chi-square test

t-test

ANOVA

Regression

In a cohort study, smokers had a lung cancer incidence of 40/1000, non-smokers had 10/1000. What is the relative risk?

Incidence in exposed = 50/1000 Incidence in non-exposed = 20/1000 What is attributable risk?

A researcher concludes that obesity causes diabetes after showing obese individuals developed diabetes later. Which essential causation criterion is satisfied?

Strength of association

Temporality

Plausibility

Coherence

A cancer screening program shows increased survival but no change in mortality. Which bias?

Length bias

Lead-time bias

Selection bias

Confounding

A test has: Sensitivity = 90% Specificity = 80% What is Positive Likelihood Ratio (LR+)?

2.5

3.5

4.5

A study finds alcohol consumption associated with lung cancer, but after adjusting for smoking, association disappears. This is:

Effect modification

Bias

Confounding

Random error

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EPIDEMIOLOGY

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Tipos de sintagmas (II)

EPIDEMIOLOGYVersión en línea

por JJMMC RESEARCH

A screening test has high sensitivity. It means

The most common cause of nephrotic syndrome in children is:

In a normal distribution, mean = median = mode. This distribution is:

Which statistical test is used to compare means between two groups?

In a cohort study, smokers had a lung cancer incidence of 40/1000, non-smokers had 10/1000. What is the relative risk?

Incidence in exposed = 50/1000 Incidence in non-exposed = 20/1000 What is attributable risk?

A researcher concludes that obesity causes diabetes after showing obese individuals developed diabetes later. Which essential causation criterion is satisfied?

A cancer screening program shows increased survival but no change in mortality. Which bias?

A test has: Sensitivity = 90% Specificity = 80% What is Positive Likelihood Ratio (LR+)?

A study finds alcohol consumption associated with lung cancer, but after adjusting for smoking, association disappears. This is: