TEDS Data Dictionary

3 Year Study Data Files

Contents of this page:

Introduction

This page relates specifically to data collected in the 3 Year study. More general issues relating to the storage and organisation of TEDS data files are discussed on another page.

Raw Data files

These files and sub-directories are currently stored in the \System\Rawdata\3yr\ directory, and the list below refers to files and sub-directories within this directory.

The Access database has been periodically updated to keep it in the most recent Access format, to avoid software compatibility issues. Nevertheless, the essential data from the tables are also stored in exported "copies" in the form of the csv files in the Export folder.

  • 3yr.accdb. This is the Access database file (2007 format) containing all the cleaned 3 Year raw data. This is now treated as the master copy of the data, and is the source of data used in the analysis dataset. The tables in the database are:
    • Adult - numeric data from the 3 Year parent booklet
    • Child1, Child2, Child3, Child4 - numeric data from the 3 Year child booklet (there are too many columns to be accommodated in a single Acess table, so the columns are split between four tables)
    • 3yrProgress - events and dates originally logged in the TEDS admin database, including booklets sent and returned, return dates, and reminders sent
  • \Export\ subdirectory, containing exported 3 Year raw data files.
    These csv files have been exported from the Access database described above, for the purpose of making the analysis dataset. The files are called:
    • Child1.csv, Child2.csv, Child3.csv, Child4.csv (twin booklet data),
    • Adult.csv (parent booklet data)
    • ReturnDates.csv (booklet return dates for each family, as originally logged in the TEDS admin database

Dataset files

These files are currently stored in the \System\Datasets\3yr\ directory. The following list refers to items within this directory:

  • cdoub945.sav - the current version of the 3 Year dataset (SPSS data file)
  • \working files\ - this subdirectory contains various intermediate files, saved during the process of converting the raw data into the dataset. This includes working datasets c1merge, c2derive, c3label and c4double, saved at the end of the first, second, third and fourth script respectively

Syntax files (scripts)

These files are currently stored in the \System\Scripts\3yr\ directory. These are SPSS syntax files. The names of the scripts are C1_merge.sps, C2_derive.sps, C3_label.sps and C4_double.sps. The processing carried out by these scripts is described on another page.