CM1.1-10 | Foundations of Health, Disease and Prevention — Graded Quiz

Correct. Preventing tobacco from ever becoming established in an adolescent population is primordial prevention — upstream of primary prevention.

Primordial prevention acts before a risk factor has become established in a population — it prevents the emergence of behavioural or social risk factors (tobacco initiation), not just their consequences. This is distinct from primary prevention, which acts after a risk factor exists to prevent disease.

Primordial = stop risk factors from emerging (before anyone smokes). Primary = prevent disease in people already at risk (existing smokers). Secondary = detect early dependence. The school programme acts before tobacco use is even established — primordial.

Correct. A low CDR can reflect a young population, not necessarily good health. District 2's higher IMR reveals poor child survival despite a lower CDR.

CDR is affected by age structure — a young population has a lower CDR even if health services are poor. IMR specifically measures child survival. District 2's low CDR may reflect a younger population, while its high IMR reveals poor child health outcomes — demonstrating that multiple indicators must be interpreted together, not in isolation.

CDR is heavily influenced by age structure — younger populations have lower CDRs regardless of healthcare quality. IMR is a more specific indicator of child health and care quality. District 2's high IMR despite low CDR suggests a young demographic masking poor child survival.

Correct. TFR is the sum of age-specific fertility rates across the reproductive age span — representing lifetime births per woman at current fertility levels.

TFR is a synthetic period measure — it estimates the average number of children a hypothetical woman would have if she experienced the current age-specific fertility rates (ASFRs) at each year of her reproductive life (15–49). India's TFR (NFHS-5) is approximately 2.0, just at replacement level.

TFR is not a simple annual count or ratio. It is a synthetic measure using current ASFRs to project lifetime fertility per woman. Option A describes the Crude Birth Rate; Option C describes the General Fertility Rate; Option D incorrectly includes stillbirths and limits to married women.

Correct. Known hypertension without symptoms = subclinical disease. Pathological change is present but the disease has not become clinically apparent (no symptoms, complications, or disability).

Hypertension in an asymptomatic individual represents the subclinical phase — measurable pathological change (elevated BP, early vascular remodelling) exists, but the patient has no symptoms. This phase is the target for secondary prevention (screening, early detection) — the man would benefit from BP measurement and treatment initiation.

Prepathogenesis is before hypertension develops. Clinical disease requires symptoms or complications. Outcome phase follows clinical disease. Asymptomatic documented hypertension = subclinical — the phase where screening makes the most difference.

Correct. Universal health insurance is not an Ottawa Charter action area. The five areas are: healthy public policy, supportive environments, community action, personal skills development, and reorienting health services.

The five Ottawa Charter action areas are: (1) Build healthy public policy, (2) Create supportive environments, (3) Strengthen community action, (4) Develop personal skills, (5) Reorient health services. Universal health insurance is not one of them — it may follow from healthy public policy, but is not itself one of the five action areas.

Ottawa Charter (1986) five areas: healthy public policy + supportive environments + community action + personal skills + reorienting health services. Health insurance is a financing mechanism, not one of the five charter action areas.

Correct. Life expectancy at birth is a positive health indicator — it measures longevity, a dimension of well-being, not disease or death directly.

Positive health indicators measure the presence of health (well-being, functionality, longevity) rather than the burden of disease or death. Life expectancy at birth is a positive indicator. Proportional Mortality Rate, Case Fatality Rate, and Sickness Absence Rate are all negative indicators (measuring death or disease burden).

Positive indicators measure wellness and longevity (e.g., life expectancy). Negative indicators measure mortality (PMR, CFR) or morbidity (sickness absence). Life expectancy is the key positive indicator to know.

Correct. Safe water tanks and chlorination modify the physical environment — removing the waterborne disease vehicle regardless of individual behaviour.

Determinants of health include biological (genetic), behavioural (lifestyle choices), physical environment (water, air, housing infrastructure), social/economic, and healthcare services. Constructing covered tanks and chlorination targets the physical environment determinant — changing the water supply infrastructure to eliminate the vector of disease.

Determinants: biological (genes), behavioural (hygiene habits), physical environment (water/housing), socioeconomic, healthcare access. Infrastructure change (tanks + chlorination) = physical environment determinant.

Correct. Early interruption means patients don't finish expressing all concerns, including sometimes their primary concern — a direct communication-quality failure with diagnostic implications.

The Beckman & Frankel (1984) study found that early interruption led patients to redirect their narrative to the doctor's focus, often failing to reveal additional concerns — including the main reason for the visit. Studies show that allowing patients to complete their opening statement rarely takes more than 90 seconds and significantly improves diagnostic yield.

Interrupting patients at 18 seconds does not improve accuracy or satisfaction — it causes patients to lose their narrative thread, miss mentioning key concerns, and feel unheard. Allowing the full opening statement (usually <2 minutes) improves diagnostic yield.

Correct. The web of causation extended beyond germ theory's one-cause → one-disease model to represent the complex, multifactorial causal network of chronic diseases.

The web of causation acknowledged that most diseases — particularly chronic non-communicable diseases — have multiple, interacting causes rather than a single necessary cause. It addressed the limitation of the germ theory model, which posited one pathogen → one disease. The web captures the complex interplay of genetic, behavioural, environmental, and social factors.

Web of causation (MacMahon & Pugh) challenges single-cause germ theory by showing disease results from interacting networks of causes. Natural history of disease describes disease course over time; social determinants model describes societal layers; health belief model describes individual illness behaviour.

Correct. Growth monitoring to detect early malnutrition using growth charts = secondary prevention (early detection and prompt intervention).

Growth monitoring at PHC is secondary prevention — it uses a screening tool (weight-for-age growth chart) to detect early/subclinical malnutrition before severe complications develop, enabling prompt treatment. Primary prevention would be ensuring adequate diet (supplementation, dietary diversification). Tertiary would be NRC-based rehabilitation for severe acute malnutrition.

Primary prevention prevents malnutrition from occurring (supplementation, dietary diversification). Secondary prevention detects it early before severe complications (growth monitoring). Tertiary treats severe malnutrition and prevents disability (NRC rehabilitation). This intern is doing early detection = secondary.