@stdlib/datasets-fivethirtyeight-ffq
v0.2.2
Published
FiveThirtyEight reader responses to a food frequency questionnaire (FFQ).
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FiveThirtyEight Food Frequency Questionnaire
FiveThirtyEight reader responses to a food frequency questionnaire (FFQ).
Installation
npm install @stdlib/datasets-fivethirtyeight-ffq
Usage
var dataset = require( '@stdlib/datasets-fivethirtyeight-ffq' );
dataset()
Returns FiveThirtyEight reader responses to a food frequency questionnaire (FFQ).
var data = dataset();
// returns [ {...}, ... ]
Notes
Examples
var bifurcateBy = require( '@stdlib/utils-bifurcate-by' );
var inmap = require( '@stdlib/utils-inmap' );
var ttest2 = require( '@stdlib/stats-ttest2' );
var dataset = require( '@stdlib/datasets-fivethirtyeight-ffq' );
function predicate( v ) {
return ( v.diabetes === 1 );
}
function createAccessor( field ) {
return accessor;
function accessor( v ) {
return v[ field ];
}
}
// Retrieve the data:
var data = dataset();
// Split the data into two groups based on whether a respondent has diabetes:
var groups = bifurcateBy( data, predicate );
// For each group, extract the frequency of green salad consumption:
var mapFcn = createAccessor( 'greensaladfreq' );
var g1 = inmap( groups[ 0 ].slice(), mapFcn );
var g2 = inmap( groups[ 1 ].slice(), mapFcn );
// Perform a two-sample two-sided Student's t-test to determine if green salad consumption is different between the two groups:
var results = ttest2( g1, g2 );
console.log( results.print() );
References
- Aschwanden, Christie. 2016. "You Can't Trust What You Read About Nutrition." https://fivethirtyeight.com/features/you-cant-trust-what-you-read-about-nutrition/.
License
The data files (databases) are licensed under an Open Data Commons Attribution 1.0 License and their contents are licensed under a Creative Commons Attribution 4.0 International Public License. The original dataset is attributed to FiveThirtyEight and can be found here. The software is licensed under Apache License, Version 2.0.
See Also
@stdlib/datasets-fivethirtyeight-ffq-cli
: CLI package for use as a command-line utility.
Notice
This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.
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Copyright
Copyright © 2016-2024. The Stdlib Authors.