All Free Community Health Nursing MCQs with Answers

• A. Mortality rate
• B. Case-fatality rate
• C. Attack rate
• D. Survival rate

Explanation: Mortality rate relates deaths to the total population during a stated time.

• A. Attack rate
• B. Mortality rate
• C. Prevalence rate
• D. Case-fatality rate

Explanation: An attack rate is the proportion of an exposed group that develops illness during an outbreak.

• A. 30 years
• B. 35 years
• C. 40 years
• D. 45 years

Explanation: Add the ages and divide by the number of observations: 20 + 30 + 40 + 50 = 140, and 140 divided by 4 equals 35 years.

• A. Values are widely spread around the mean
• B. Values are closely grouped around the mean
• C. The sample contains no unusual values
• D. The mean is equal to the median

Explanation: Standard deviation describes the spread of observations around the mean.

• A. Bar graph
• B. Histogram
• C. Scatter plot
• D. Line graph

Explanation: Blood group is a categorical variable, so separate bars can compare the number in each category.

• A. Simple random sampling
• B. Systematic sampling
• C. Stratified sampling
• D. Convenience sampling

Explanation: Each eligible household has an equal chance of selection when slips are mixed and drawn randomly.

• A. Stratified random sampling
• B. Cluster sampling
• C. Purposive sampling
• D. Snowball sampling

Explanation: Stratified sampling first divides the population into important subgroups and then samples from each subgroup.

• A. The difference is statistically significant
• B. The treatments have identical effects
• C. The study proves one treatment causes recovery
• D. There is a 2% chance the data were collected

Explanation: Because 0.02 is less than 0.05, the result is statistically significant under the stated criterion.

• A. The exposure is associated with higher risk
• B. The exposure prevents hepatitis infection
• C. The result proves the exposure causes infection
• D. The exposure has exactly 1.8 times the risk in every person

Explanation: The relative risk above 1 indicates higher risk in the exposed group, and the interval does not include 1, supporting a statistically…

• A. Temporality cannot be established
• B. The sample must contain only children
• C. The result cannot show any association
• D. The survey automatically proves causation

Explanation: Cross-sectional studies measure exposure and outcome at the same time, so they may not show which came first.

• A. Person distribution
• B. Place distribution
• C. Time distribution
• D. Seasonal variation

Explanation: Person distribution describes disease occurrence according to characteristics such as age, sex, occupation or education.

• A. Case-control study
• B. Cohort study
• C. Cross-sectional study
• D. Ecological study

Explanation: A case-control study begins with disease status and looks backward to compare past exposures.

• A. 5 percentage points
• B. 15 percentage points
• C. 25 percentage points
• D. 400 percentage points

Explanation: Attributable risk is the risk in the exposed group minus the risk in the unexposed group: 20% minus 5% equals 15 percentage points.

• A. 24 divided by 12,000, multiplied by 100,000
• B. 12,000 divided by 24, multiplied by 100,000
• C. 24 divided by total population, multiplied by 1,000
• D. 12,000 divided by total population, multiplied by 1,000

Explanation: The maternal mortality ratio is maternal deaths divided by live births, multiplied by 100,000.

• A. 2 visits
• B. 3 visits
• C. 4 visits
• D. 6 visits

Explanation: The mode is the value that occurs most frequently in a data set. The value 3 occurs twice, while every other value occurs once.

• A. 0.5°C
• B. 1.0°C
• C. 1.5°C
• D. 2.0°C

Explanation: Range is calculated by subtracting the lowest value from the highest value. Therefore, 38.0°C minus 36.5°C equals 1.5°C.

• A. Cluster sampling
• B. Systematic sampling
• C. Convenience sampling
• D. Purposive sampling

Explanation: Cluster sampling selects naturally occurring groups, such as households or villages, and studies members within the selected groups.

• A. Two households must be selected
• B. Twenty households are already selected
• C. Each household has a 20% selection chance
• D. The survey has a 20% response rate

Explanation: A probability of 0.2 is equivalent to a 20% chance of selection for that household.

• A. The association is seen only in one small village
• B. Malaria occurred before bed nets were introduced
• C. The association persists after important confounders are controlled
• D. People who use bed nets also report more health visits

Explanation: An association that remains after controlling for important confounding factors provides stronger evidence that the exposure may have a…

• A. Histogram
• B. Pie chart
• C. Bar chart of blood groups
• D. Line list of patient names

Explanation: A histogram displays the frequency distribution of continuous numerical data across intervals.