1. Measures of location - Percentiles, deciles, and quartiles A growth chart is a plot of the percentiles of growth measurements, such as weight and height, for a population of infants or children. It is used by pediatricians to assess a child's growth over time. The Centers for Disease Control and Prevention (CDC) is a U.S. agency that has developed growth charts for clinical use by health professionals. T most recent charts were published in 2000. Growth Chart: Weight by Age for Girls 0-24 Months at the 2nd, 5th, 10th, 25th, 50th, 75th, 90th, 95th, and 98th Percentiles

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Weight (lbs.)
28
26-
24-
22-
20
18-
16-
14-
12-
10
8
6
4
Birth
3
9
12
Age (months)
15
18
21
2
-75
50
-25
-10
5
2₁
I
I
24
13
12
11
10
9
8
7
6
5
3
2
Weight (kg.)
The 2000 CDC growth charts use a reference population of both breast-fed and formula-fed infants. Breast-fed babies tend to gain weight more rapidly
than formula-fed babies in the first 2 to 3 months of their lives, but they tend to weigh less than formula-fed babies from 6 to 12 months.
Meena is a healthy baby who was exclusively breast-fed for her first 12 months. Which of the following is most likely a description of her weights (at 3,
6, 9, and 12 months of age) as percentiles of the CDC growth chart reference population?
40th percentile at 3 months; 40th percentile at 6 months; 40th percentile at 9 months; 40th percentile at 12 months
80th percentile at 3 months; 80th percentile at 6 months; 80th percentile at 9 months; 90th percentile at 12 months
20th percentile at 3 months; 50th percentile at 6 months; 80th percentile at 9 months; 90th percentile at 12 months
70th percentile at 3 months; 40th percentile at 6 months; 30th percentile at 9 months; 25th percentile at 12 months
Transcribed Image Text:Weight (lbs.) 28 26- 24- 22- 20 18- 16- 14- 12- 10 8 6 4 Birth 3 9 12 Age (months) 15 18 21 2 -75 50 -25 -10 5 2₁ I I 24 13 12 11 10 9 8 7 6 5 3 2 Weight (kg.) The 2000 CDC growth charts use a reference population of both breast-fed and formula-fed infants. Breast-fed babies tend to gain weight more rapidly than formula-fed babies in the first 2 to 3 months of their lives, but they tend to weigh less than formula-fed babies from 6 to 12 months. Meena is a healthy baby who was exclusively breast-fed for her first 12 months. Which of the following is most likely a description of her weights (at 3, 6, 9, and 12 months of age) as percentiles of the CDC growth chart reference population? 40th percentile at 3 months; 40th percentile at 6 months; 40th percentile at 9 months; 40th percentile at 12 months 80th percentile at 3 months; 80th percentile at 6 months; 80th percentile at 9 months; 90th percentile at 12 months 20th percentile at 3 months; 50th percentile at 6 months; 80th percentile at 9 months; 90th percentile at 12 months 70th percentile at 3 months; 40th percentile at 6 months; 30th percentile at 9 months; 25th percentile at 12 months
1. Measures of location Percentiles, deciles, and quartiles
A growth chart is a plot of the percentiles of growth measurements, such as weight and height, for a population of infants or children. It is used by
pediatricians to assess a child's growth over time.
The Centers for Disease Control and Prevention (CDC) is a U.S. agency that has developed growth charts for clinical use by health professionals. The
most recent charts were published in 2000.
Growth Chart: Weight by Age for Girls 0-24 Months at the 2nd, 5th, 10th, 25th, 50th, 75th, 90th, 95th, and 98th Percentiles
Weight (lbs.)
36
34
32-
30
28-
26-
24-
22-
20
18-
16-
14-
12-
10
8
6
4
Birth
3
6
9
12
Age (months)
15
18
21
-98
-95
-90
-75
50
-25
505 2
-10
2
T
T
24
16
15
14
13
12
11
10
32
6
5
4
3
2
Weight (kg.)
Transcribed Image Text:1. Measures of location Percentiles, deciles, and quartiles A growth chart is a plot of the percentiles of growth measurements, such as weight and height, for a population of infants or children. It is used by pediatricians to assess a child's growth over time. The Centers for Disease Control and Prevention (CDC) is a U.S. agency that has developed growth charts for clinical use by health professionals. The most recent charts were published in 2000. Growth Chart: Weight by Age for Girls 0-24 Months at the 2nd, 5th, 10th, 25th, 50th, 75th, 90th, 95th, and 98th Percentiles Weight (lbs.) 36 34 32- 30 28- 26- 24- 22- 20 18- 16- 14- 12- 10 8 6 4 Birth 3 6 9 12 Age (months) 15 18 21 -98 -95 -90 -75 50 -25 505 2 -10 2 T T 24 16 15 14 13 12 11 10 32 6 5 4 3 2 Weight (kg.)
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