This database is a sample of the first four waves of data collection of the National Child Development Study (NCDS) started in 1958 (https://cls.ucl.ac.uk/cls-studies/1958-national-child-development-study/). The NCDS project is a continuing survey which follows the lives of over 17,000 people born in England, Scotland and Wales in a same week of the year 1958.
A data.frame with 5,476 participants (rows) and 6 variables
the anonymised ncds identifier
the Goldthorp social class 90 scale coded as a 12-levels factor: higher-grade professionals
20, routine non-manual employees with higher grade (administration, commerce)
routine non-manual employees with lower grade (sales and services)
32, small proprietors with employees
small proprietors without employees
42, farmers, small holders and workers in primary production
50, skilled manual workers
60, semi-skilled and unskilled manual workers
other workers in primary production
0 when the scale was not applicable to the participant. This variable has 806 NAs.
the health status of the participant stored in a 4 ordered levels factor:
1 for excellent,
2 for good,
3 for fair,
4 for poor. This variable has 2 NAs.
the employment status at inclusion stored in a 7-levels factor:
1 for unemployed status,
2 for govt sheme,
3 for full-time education,
4 for housework or childcare,
5 for sick or handicapped,
6 for other,
if employed between 16 and 33. This variable has 58 NAs.
the gender of the participant stored in a 2-levels factor:
1 for male,
2 for female
a 2-level factor equals to
1 for participant with completed graduate studies or
INSERM - This database is a sample of the National Child Development Study
The ncds identifier have been voluntarily anonymized to allow their availability for the package.
This sample has 5,476 participants included in the study between the first and fourth wave of data collection.