Data intelligence · automation · analyticsA Praxis Global Institute platform
Praxis Data Lab

Your Study Package

Everything you need to move from data to research.

Confirm your variables and cycles, then continue with one organized, reproducible package built from official CDC/NCHS source files.

A research team reviewing results together around a laptop

Your specification

4 research variables · 1 cycle

Edit study
Complete the study specification first.
  • ARXO2WD is not released for 1999-2000.
  • ALQ111 is not released for 1999-2000.
ALQ111The next questions are about drinking alcoholic beverages. Included are liquor (such as whiskey or gin), beer, wine, wine coolers, and any other type of alcoholic beverage. In {your/SP's} entire life, {have you/has he/has she} had at least 1 drink of any kind of alcohol, not counting small tastes or sips? By a drink, I mean a 12 oz. beer, a 5 oz. glass of wine, or one and a half ounces of liquor.
ARXO2WDOCCIPUT-TO-WALL DISTANCE IN CENTIMETERS
DCDINDEX
SDMVSTRAMasked Variance Unit Pseudo-Stratum variable for variance estimation

Cycles: 1999-2000

Up to 50 researcher-selected variables per one-time package.

Included automatically · no limit charge

Survey-ready foundations

  • SEQN participant identifier
  • NHANES cycle indicator
  • Eligibility fields
  • Appropriate sample weight
  • Survey strata
  • Survey PSU

Complete delivery

Reproducible files, not just a data export

  • Cleaned CSV, Parquet, and Excel outputs
  • Original CDC/NCHS source files and checksums
  • Codebook, harmonization record, and provenance
  • README, validation summary, and analysis specification
  • R and Python starter code

Preparation normally takes 5–10 minutes; please allow up to 15 minutes. You can leave after payment and return through My Study Packages, and we’ll email your secure download link when it is ready.