National Family Health Survey is done every
Now, the correct answer is every five years. I remember that the first NFHS was in 1992-93, then the second in 1998-99, the third in 2005-06, and the fourth in 2015-16. So the interval is roughly every five years. That makes sense because such large surveys require significant planning and resources, so they wouldn't be done more frequently.
Looking at the incorrect options, they might be other time intervals like every year, every two years, or every ten years. For example, annual surveys are common for other data but not for NFHS. The wrong options need to be explained why they're incorrect. For instance, if an option says every year, that's too frequent for such a comprehensive survey. Similarly, every ten years would be too infrequent to capture changes in health indicators effectively.
The clinical pearl here is that the NFHS is a key source for tracking progress towards health-related Sustainable Development Goals (SDGs). Students should remember that the survey's periodicity is every five years, which is crucial for public health planning and policy-making in India.
I need to structure the explanation according to the user's guidelines, making sure each section is covered with the right details. Let me check if I have all the required sections and that the explanations are concise and accurate. Also, ensure that the correct answer is clearly stated at the end.
**Core Concept**
The National Family Health Survey (NFHS) is a large-scale, cross-sectional demographic and health survey conducted in India to assess health indicators, family welfare programs, and socio-economic factors. Its periodicity is critical for tracking progress in public health interventions and policy planning.
**Why the Correct Answer is Right**
The NFHS is conducted approximately **every 5 years** to ensure comprehensive data collection while allowing sufficient time for meaningful changes in health metrics. This interval aligns with the need for detailed fieldwork, data analysis, and reporting, which are resource-intensive. The survey provides critical data for monitoring maternal and child health, reproductive health, and non-communicable diseases, guiding national health policies.
**Why Each Wrong Option is Incorrect**
**Option A:** "Every 1 year" is incorrect because annual surveys lack the scope and resources required for such a detailed, nationwide assessment.
**Option B:** "Every 3 years" is incorrect as the NFHS requires longer intervals to capture significant demographic and health trends.
**Option D:** "Every 10 years" is incorrect because this would delay actionable insights and hinder timely policy adjustments.
**Clinical Pearl / High-Yield Fact**
The NFHS is a cornerstone for assessing progress toward Sustainable Development Goals (SDGs) in India. Remember: **NFHS ≈ 5-year cycle**, with the latest (NFHS-5) conducted in 2019-2021. Confusion with shorter-cycle surveys like the District Level Household Survey (DLHS) is common—avoid this by noting the NFHS’s longer interval.
**Correct Answer