A growth chart is a plot of the percentiles of growth measurements, such as weig

Question

A growth chart is a plot of the percentiles of growth measurements, such as weight and height,for a or children. It is used by pediatridians to assess a child's growth over time. The Centers for Disease health. Through one of its units, the National Center for Health Statistics (NCHS), the CDC has developed growth charts for Control and Prevention (CDC) is a u.s. agency devoted to the protection and promotion of public clinical use by health professionals. The most recent charts were published in 2000. The 2000 CDC growth charts were developed using a reference population of infants. A pediatridan looks up one of the charts and finds that the 95th percentile for weights of baby boys at 20-1/2 months is 30.4 pounds. This means that of the 20-1/2-month-old baby boys in the reference population weigh less than 30.4 pounds or less, and of these baby boys weigh more than 30.4 pounds. The 2000 CDC growth charts use a reference population of both breast-fed and formula-fed infants. It has been observed they tend to weigh less than formula-fed babies from 6 to 12 months Sarah is a healthy baby who was excdlusively breast-fed for her first 12 months. Which of the following is most likelya that breast-fed babies tend to gain weight more rapidly than formula-fed babies in the first 2 to 3 months of their lives, but description of her weights (at 3, 6,9, and 12 months of age) as percentiles of the CDC growth chart reference population? O 80th percentile at 3 months; 80th percentile at 6 months: 80th percenble at 9 months: 90th percentle at 12 months O 40th percentile at 3 months 40th percentile at 6 months; 40th percentile at 9 months: 40th percentile at 12 months months, 40th percentile at 5i months, 30th percentile at 9 months; 25th percentile at 12 months O 20th percentile at 3 months: 50th percentie an d months- 80th percenbile at 9 months: 90th percenbie at 12 months

Explanation / Answer

5)

95% of the 20-1/2 month old boys in the population weigh less than 30.4 pounds or less, and 5% of these baby weigh more than 30.4 pounds.

Correct answer: Option (c) 70th percentile at 3 months; 40th percentile at 6 months; 30th percentile at 9 months; 25th percentile at 12 months;

Explanation: Since Sarah breastfed for her first 1 months, she gained weight in first three month and lose weight from 6 to 12 month. If consider overall population she will lie in higher percentile in her first 3 months then subsequently lose weight hence in later month she will lie in lower percentile.

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