Child survival index is calculated by ?
## Core Concept
The Child Survival Index (CSI) is a measure used to assess the health and well-being of children in a population. It is calculated based on the probability of a child surviving to a certain age, typically 5 years. This index is an important indicator of a country's or region's healthcare quality, socio-economic status, and overall development.
## Why the Correct Answer is Right
The correct formula for calculating the Child Survival Index involves the probability of a child dying before reaching a certain age, usually 5 years. This is often expressed as the Under-5 Mortality Rate (U5MR), which is the number of deaths of children under 5 years of age per 1,000 live births. The formula for CSI is: CSI = (Number of children surviving to age 5 / Total number of children born) * 1000, or alternatively, it can be derived from the under-5 mortality rate. Therefore, option is the correct answer as it accurately represents a calculation involving survival rates or mortality rates specific to children.
## Why Each Wrong Option is Incorrect
- **Option A:** This option is incorrect because it does not accurately represent the formula or method for calculating the Child Survival Index. Without specific details on what represents, it's hard to directly refute, but generally, CSI is not calculated through simple addition or subtraction of unrelated rates.
- **Option B:** This option is incorrect because, similar to option A, it lacks specificity and does not accurately reflect the established method for calculating CSI.
- **Option D:** This option is incorrect as it likely presents an unrelated or inaccurately represented formula for the Child Survival Index.
## Clinical Pearl / High-Yield Fact
A key point to remember is that the Child Survival Index is closely related to the United Nations' Sustainable Development Goals (SDGs), specifically Goal 3, which aims to ensure healthy lives and promote well-being for all, including children. Monitoring and improving the CSI is crucial for assessing progress towards this goal.
## Correct Answer Line
**Correct Answer: C.**