Estimate the probable number of births for the village sub-center where the birth rate is 25 per 1000. The sub-center's population is 5000.

1. A

   100

2. B

   125

3. C

   138

4. D

   69

Appeared in: Raj. CHO -2024

Explanation

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• The question requires calculating the expected number of live births using the provided crude birth rate and total population.
• The formula to find the number of live births is: (Birth Rate × Total Population) / 1000.
• Substituting the given values: (25 × 5000) / 1000.
• The calculation simplifies to 125,000 / 1000, which equals 125 births.

Why Other Options Were Wrong

• Option A: This is an incorrect calculation. It might result from misplacing the decimal or rounding incorrectly, for instance, (25 x 5000) / 1250 instead of 1000.
• Option C: This value represents the estimated number of total pregnancies, not live births. It is calculated by adding a 10% wastage factor (for abortions and stillbirths) to the number of live births (125 + 12.5 ≈ 138). The question specifically asks for the number of births.
• Option D: This value is a random distractor. It may be derived from a miscalculation, such as taking half of the estimated pregnancies (138 / 2 = 69), which represents the number of pregnancies an ANM should have on her register in any given month, not the total annual births.

Related Visual

• Visual 1: Infographic: A simple visual illustrating the formula: Number of Births = (Birth Rate × Population) / 1000, with placeholders for each variable.
• Visual 2: Flowchart: A step-by-step flowchart showing how to approach the calculation: 1. Identify given data -> 2. Select correct formula -> 3. Substitute values -> 4. Calculate the result.

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Calculation of expected births using birth rate and population data as background academic context rather than a clinical decision trigger.
• This calculation is a fundamental skill for community health nurses (especially Auxiliary Nurse Midwives - ANMs) in India for effective planning and resource management.
• Estimating births helps in forecasting the required quantity of supplies like antenatal kits, iron-folic acid tablets, vaccines, and delivery kits for the year.
• It allows for better workload management, helping to plan for the number of required antenatal check-ups, postnatal visits, and immunization sessions.

How to Approach the Question

• Identify the question as a numerical problem involving vital statistics (birth rate).
• Recall the standard formula for Crude Birth Rate: Birth Rate = (Number of Live Births / Total Population) × 1000.
• Recognize that you need to find the 'Number of Live Births' and rearrange the formula accordingly: Number of Live Births = (Birth Rate × Total Population) / 1000.
• Carefully substitute the values provided in the stem: Birth Rate = 25 and Population = 5000.
• Perform the mathematical calculation: (25 × 5000) / 1000.
• Compare the result with the given options and select the matching one, while being aware of distractors that represent related but different concepts (like total pregnancies).

Concept Tested & Keywords

• Concept Tested: Calculation of expected births using birth rate and population data.
• Stem keywords: probable number of births, village sub-center, birth rate, 25 per 1000, population, 5000
• Lead-in keywords: Estimate
• Negative lead-in flag: false

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