LPS harmonised demographic dataset (reduced)

LPS harmonised demographic dataset (reduced)#

Last modified: 17 Jul 2025

UK LLC has created a harmonised dataset of key demographic variables across the partner LPS.

1. Summary#

The reduced LPS harmonised demographic dataset contains harmonised variables for sex, gender, year of birth and ethnic group.

Note UK LLC has not changed the original LPS data for these variables.

This dataset retains only the most recent response provided by a participant for each variable.

Researchers are encouraged to use the reduced dataset:

  • To have the most recent, valid, definition of a participant’s demographic characteristics

  • To have comparable data on ethnicity and gender for the maximum number of participants

  • To be able to compare LPS data with data from NHS England using the NHSE demographics dataset.

Where different levels of granularity can be derived for variables (objects), i.e. ethnic group and gender, all possible levels of the variables have been derived and included in the dataset.

Missing data have been removed from the reduced dataset.

2. Variables#


Variable name

Variable description

LLC_xxxx_stud_id

Individual identifier (unique to each project in the TRE)

cohort

LPS name

source

LPS dataset holding the original demographic variable(s) for each participant (e.g. ALSPAC_wave1y)

object

Label indicating which of the harmonised variables is represented by the value (e.g. llc_sex, llc_gender)

value

Numeric value for each of the objects

label

Description of what each of the values represents

llc_timestamp

Date (month and year) on which the information was provided by the participant to the LPS

3. Updates to dataset#

Whenever a new LPS joins UK LLC, demographic variables provided by the LPS will be harmonised and added to the UK LLC demographic datasets. These Guidebook pages will be updated to reflect these changes.

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