SMLE Community Medicine & Preventive Health

Question 1

Which of the following statistics is the BEST indicator of the overall quality of healthcare in a country?

Accepted Answer

Infant mortality rate

Answer

Crude birth rate

Answer

Total fertility rate

Answer

Crude death rate

Question 2

A screening test has a sensitivity of 85% and specificity of 90%. If the prevalence of the disease increases in the tested population, what happens to the positive predictive value (PPV)?

Accepted Answer

PPV increases

Answer

PPV decreases

Answer

PPV remains unchanged

Answer

PPV becomes equal to sensitivity

Question 3

According to the Saudi National Immunization Program, which two vaccines are administered at birth?

Accepted Answer

BCG and Hepatitis B

Answer

BCG and Hepatitis A

Answer

OPV and Hepatitis B

Answer

Rotavirus and BCG

Question 4

A 35-year-old asymptomatic woman undergoes a Pap smear test for cervical cancer detection. This is an example of which level of prevention?

Accepted Answer

Secondary prevention

Answer

Primordial prevention

Answer

Primary prevention

Answer

Tertiary prevention

Question 5

In a case-control study investigating the association between a risk factor and a disease, which measure of association is typically calculated?

Accepted Answer

Odds ratio

Answer

Relative risk

Answer

Attributable risk

Answer

Population attributable risk percent

Question 6

In a clinical trial, neither the participants nor the investigators know who received the active treatment or the placebo. This study design is called:

Accepted Answer

Double-blind trial

Answer

Open-label trial

Answer

Single-blind trial

Answer

Triple-blind trial

Question 7

Which of the following is the MOST important Wilson and Jungner criterion for a disease to be suitable for a screening program?

Accepted Answer

An effective treatment must be available and early treatment must improve outcomes compared to late treatment

Answer

The disease must have a high case fatality rate

Answer

The test must use invasive techniques for high accuracy

Answer

The disease must be highly infectious