Measurements of weight and rate of gain in weight are the best single parameters for assessing physical growth. When to calculate weight for age repeated measurements should be done at regular intervals , ideally monthly , from birth to 1 year , every 2 months during the 2 nd year and every 3 months thereafter upto 5 years of age , since this group is at greater risk from growth faltering .
WHO standards of weight for age of boys and girls upto 5 year of age
A baby should gain atleast 500 gm weight per month in first 3 months of life . That is the minimum . The children who gain less weight are malnourished It is usual for babies to gain about 1 kg a month , especially in the first 3 months. Healthy babies on an average double their birth weight by 5 months , and treble it by end of first year and quadruple by the age of 2 During the first year , weight is increased by about 7 kg . In India the avg. birth weight is between 2.7 to 2.9 kg
Average weight and height increase during the first 5 years
WEIGHT FOR HEIGHT
Weight for height helps to determine whether a child is within a range of “ normal” weight for his/ her height A child who is less than 70 percent of the expected weight for height is classed as severly wasted