Practical Class Instructions:
This document contains a series of interactive scenarios designed for group work in social medicine and public health workshops. Each group will work through a specific case study to calculate demographic indices, interpret population trends, and navigate the legal requirements for civil status registration.
Reference Material
This assignment is based on the reading material: Demography Indices and the Physician’s Role in Registration. All calculations and legal justifications must reference concepts and ordinances from this text.
General Instructions for Students
Each group will independently solve a distinct demographic problem. Your task is to:
- Perform the Calculations: Solve the requested indices in sequence using the provided formulas. Show all working.
- Interpret the Results: Relate the numbers to the demographic stages and assessment categories (low/high/average).
- Address the Discussion Questions: Formulate brief, evidence-based answers (3–5 sentences) for class presentation.
Case Study 1: “The Invisible Influx”
Case Study 2: “The Silver Tsunami”
Quantifying the Burden of Population Ageing
Scenario: Nipponica has exceptional life expectancy, but the workforce is shrinking. Planners need a full demographic profile to justify evidence-based reforms to the national health insurance.
| Age group | Population |
|---|---|
| Under 15 years | 15,000,000 |
| 15 to 64 years (working age) | 70,000,000 |
| 65 years and older | 35,000,000 |
| Total | 120,000,000 |
Special Data: \(80+\) years \(= 8.4M\); Women \(50-64 = 9.6M\).
Your Task:
- Calculate Child Dependency Ratio (CDR) and Old-Age Dependency Ratio (OADR).
- Calculate Total Dependency Ratio. Interpret: how many dependents per 100 workers?
- Calculate the Ageing Index.
- Calculate the Caretaker Ratio (\(P_{80+} / F_{50-64} \times 100\)).
Discussion Hints:
- Which ratio best communicates “fiscal pressure” to a politician?
- How does the “infrastructure of care” change when a population moves from Stage 4 to Stage 5?
- Discuss “Compression of Morbidity”: Do the numbers tell the whole story of disability?
Case Study 3: “The Vulnerable Generation”
High Fertility, Infant Mortality, and the Demographic Trap
Scenario: Equatoria is a developing region with rapid growth. Infant mortality is catastrophic, and maternal wards are overwhelmed. You must prioritize resources for the regional health authority.
| Parameter | Value |
|---|---|
| Total mid-year population | 5,000,000 |
| Live births | 200,000 |
| Deaths < 1 year | 16,000 |
| Deaths < 28 days | 9,600 |
| Stillbirths | 4,000 |
| Women aged 15–49 | 1,200,000 |
Your Task:
- Calculate Crude Birth Rate (CBR) and General Fertility Rate (GFR).
- Calculate Infant Mortality Rate (IMR). State its assessment level (Very Low to Very High).
- Calculate Neonatal and Post-neonatal Mortality Rates. What causes do these suggest?
- Calculate Perinatal Mortality Rate. (Assume early neonatal deaths are 60% of total neonatal deaths).
Discussion Hints:
- Explain the “Demographic Trap”: Why does high infant mortality prevent family planning?
- Reframe contraception as a clinical intervention for infant survival (birth intervals).
- Identify the “low-hanging fruit”: Is it cleaner water or better NICUs that this data calls for?
Case Study 4: “The Reversed Transition”
Below-Replacement Fertility and Excess Male Mortality
Scenario: Borealis is shrinking. Fertility is “lowest-low,” and middle-aged men are dying at high rates from preventable causes (cirrhosis, lung cancer). Classical transition theory is being defied.
| Parameter | Value |
|---|---|
| Total mid-year population | 140,000,000 |
| Live births | 1,400,000 |
| Total deaths | 1,960,000 |
| Premature deaths (< 65 yrs) | 470,400 |
| Male / Female deaths | 1.078M / 0.882M |
| Total Fertility Rate (TFR) | 1.3 |
Your Task:
- Calculate Crude Birth Rate and Crude Death Rate.
- Calculate the Rate of Natural Increase (RNI). Interpret a negative result.
- Calculate Proportion of Premature Deaths. (Assume 70% of premature deaths are male).
- Calculate the Male-to-Female Death Ratio.
Discussion Hints:
- Contrast the “Proximate Causes” of death in Borealis vs. Equatoria.
- What is the “economic suicide” of lowest-low fertility combined with male premature mortality?
- Evaluate pronatalist policy vs. public health lifestyle interventions: Which yields results faster?
Evaluation Criteria:
- Mathematical Accuracy (40%): Correct application of formulas and selection of denominators.
- Demographic Interpretation (30%): Correct categorization of rates according to the reading material.
- Critical Synthesis (20%): Integration of legal (Bulgarian Ordinance) and social concepts in the final task.
- Professional Communication (10%): Clarity and precision of group presentation.