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Table 2 Descriptive statistics for anthropometric variables after removing longitudinal outliers according to different cutoffs. Brazilian Food and Nutrition Surveillance System (SISVAN), 2008–2017

From: Identifying biologically implausible values in big longitudinal data: an example applied to child growth data from the Brazilian food and nutrition surveillance system

 

Dataset after removing LOs according to different cutoffs

 

< -3 / > +3

< -4 / > +4

< -5 / > +5

< -6 / > +6

 

Mean (SD)

Min; Max

Mean (SD)

Min; Max

Mean (SD)

Min; Max

Mean (SD)

Min; Max

Boys

        

Age (months)

31.37 (16.57)

0.00; 59;00

31.42 (16.55)

0.00; 59.00

31.44 (16.54)

0.00; 59.00

31.45 (16.53)

0.00; 59.00

Length/height (cm)

89.90 (14.48)

45.00; 120.00

89.98 (14.51)

45.00; 120.00

90.01 (14.53)

45.00; 120.00

90.02 (14.53)

45.00; 120.00

L/HAZ

-0.38 (1.45)

-6.00; 6.00

-0.37 (1.51)

-6.00; 6.00

-0.37 (1.53)

-6.00; 6.00

-0.36 (1.53)

-6.00; 6.00

Number of measurements

4.52 (3.99)

1; 113

4.57 (4.00)

1; 113

4.58 (4.01)

1; 113

4.58 (4.01)

1; 113

Age (months)

31.24 (16.53)

0.00; 59.00

31.32 (16.53)

0.00; 59.00

31.36 (16.53)

0.00; 59.00

31.37 (16.53)

0.00; 59.00

Weight (kg)

13.52 (3.93)

1.70; 34.60

13.56 (3.97)

1.70; 34.60

13.58 (4.00)

1.70; 34.60

13.58 (4.01)

1.70; 34.60

WAZ

0.06 (1.20)

-6.00; 5.00

0.07 (1.22)

-6.00; 5.00

0.08 (1.23)

-6.00; 5.00

0.08 (1.24)

-6.00; 5.00

Number of measurements

4.54 (3.99)

1; 113

4.57 (4.00)

1; 113

4.58 (4.01)

1; 113

4.59 (4.02)

1; 113

Girls

        

Age (months)

31.76 (16.54)

0.00; 59.00

31.81 (16.51)

0.00; 59.00

31.83 (16.50)

0.00; 59.00

31.83 (16.50)

0.00; 59.00

Length/height (cm)

89.26 (14.60)

45.00; 120.00

89.34 (14.64)

45.00; 120.00

89.37 (14.65)

45.00; 120.00

89.38 (14.66)

45.00; 120.00

L/HAZ

-0.31 (1.40)

-6.00; 6.00

-0.30 (1.46)

-6.00; 6.00

-0.29 (1.56)

-6.00; 6.00

-0.29 (1.49)

-6.00; 6.00

Number of measurements

4.47 (3.89)

1; 88

4.52 (3.91)

1; 88

4.53 (3.91)

1; 88

4.53 (3.92)

1; 88

Age (months)

31.63 (16.49)

0.00; 59.00

31.71 (16.49)

0.00; 59.00

31.75 (16.50)

0.00; 59.00

31.76 (16.50)

0.00; 59.00

Weight (kg)

13.14 (3.97)

1.70; 35.80

13.19 (4.02)

1.70; 36.80

13.21 (4.05)

1.70; 36.80

13.22 (4.07)

1.70; 36.80

WAZ

0.06 (1.16)

-6.00; 5.00

0.08 (1.18)

-6.00; 5.00

0.08 (1.19)

-6.00; 5.00

0.09 (1.20)

-6.00; 5.00

Number of measurements

4.49 (3.89)

1; 88

4.59 (3.95)

1; 88

4.53 (3.92)

1; 88

4.54 (3.92)

1; 88

  1. Notes: LOs: longitudinal outliers, SD: standard deviation, L/HAZ: length/height-for-age z-score, WAZ: weight-for-age z-score