Dataset: The Health of Houston Survey 2018

Variable obesity14_17: Child obesity, 14-17 years [C]

Literal Question

The variable was created from multiple survey questions, specifically CHC_1 and CHC_2.

Descriptive Text

The child BMI variable was calculated from children's height and weight variables using the following equation: BMI=(mass (kg))/(height (m)^2). The calculated BMI and percentile growth charts from the CDC were used to categorize children as normal weight (<85th percentile), overweight (>=85th and <95th percentile) and obese (>=95th percentile). Each child's age (used mid-year e.g., 30.5 months for a 2 year old) and gender were used to determine which percentile cut-offs to compare. The universe for this variable includes all children age 14 to 17. BMI values for children younger than 14 years are not included in this variable. Biologically implausible values, following the practice of CDC's Youth Risk Behavior Surveillance System (YRBSS), were set to missing.

Values Categories N NW
1 Normal weight 251 165,109.8
2 Overweight 45 22,753.3
3 Obese 48 35,671.5
-9 Don't know/Refuse 67 45,800.3
-8 Not in universe 6791 4,319,187.5
-7 Interview suspended 8 7,518.9

Summary Statistics

Valid cases 344 223534.609
Missing cases 6866 4372506.71
Standard deviation 0.723 0.75
This variable is numeric


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