Infant Mortality Rate: Definition and Age Threshold
The infant mortality rate (IMR) is a crucial public health indicator used to measure the health and well-being of a population. It specifically tracks the number of deaths among infants relative to a standard number of live births.
Understanding Infant Mortality Rate Calculation
The standard definition of the infant mortality rate is the number of infant deaths per every 1,000 live births within a given year. Critically, "infant" in this context refers to a child who has not yet reached their first birthday.
Therefore, the infant mortality rate represents the number of babies dying before reaching one year of age, per 1,000 live births.
Importance of the Age Threshold
- The age cutoff of one year is internationally recognized and allows for consistent comparison of IMR across different countries and regions.
- Focusing on deaths before the age of one helps identify risks associated with pregnancy, childbirth, and the crucial postnatal period, including factors like birth defects, SIDS (Sudden Infant Death Syndrome), accidents, and infections.
- Tracking this specific age group highlights the effectiveness of maternal and child healthcare services.
Understanding this definition is vital for analyzing child survival rates and identifying areas needing improved healthcare interventions.
Important Questions from Miscellaneous
A stone is thrown horizontally from the top of a 20 m high building with a speed of 12 m/s. It hits the ground at a distance R from the building. Taking g = 10 m/s2 and neglecting air resistance will give :
A sphere of volume V is made of a material with lower density than water. While on Earth, it floats on water with its volume f1V (f1 < 1) submerged. On the other hand, on a spaceship accelerating with acceleration a < g (g is the acceleration due to gravity on Earth) in outer space, its submerged volume in water is f2V. Then:
A railway wagon (open at the top) of mass M1 is moving with speed v1 along a straight track. As a result of rain, after some time it gets partially filled with water so that the mass of the wagon becomes M2 and speed becomes v2. Taking the rain to be falling vertically and the water stationery inside the wagon, the relation between the two speeds v1 and v2 is :
Consider the following statements:
1. Distance between the longitudes becomes zero on North Pole and South Pole.
2. Distance between the longitudes is maximum on the Equator.
3. Number of longitudes is more than number of latitudes.
Which of the statements given above is/are correct?
One block of 2⋅0 kg mass is placed on top of another block of 3⋅0 kg mass. The coefficient of static friction between the two blocks is 0⋅2. The bottom block is pulled with a horizontal force F such that both the blocks move together without slipping. Taking acceleration due to gravity as 10 m/s2, the maximum value of the frictional force is :
