What are the adverse health effects of exposure to dust on the London Underground?

The adverse health effects of exposure to dust on the London Underground

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

ISRCTN

Registry ID

ISRCTN62140918

Enrollment

10000

Registered

2021-11-08

Start date

2014-01-01

Completion date

Unknown

Last updated

2024-07-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cardiorespiratory sickness absence Respiratory

Interventions

This retrospective cohort study will use London Underground (LU)'s Human Resources (HR) electronic records, stored on the SAP (System Analysis and Software Development) database. Sickness absence re

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: LU staff employed between 01/01/2014 to 31/12/2019, including those who joined or left in this period.

Exclusion criteria

Exclusion criteria: Non-TfL employees whose sickness absence data are not recorded in the LU employment database.

Design outcomes

Primary

Measure	Time frame
Cause-specific incidence rates for different cardiorespiratory illnesses in LU employees with exposures to different concentrations of PM are measured using sickness absence data from the LU HR database	—

Secondary

Measure	Time frame
1. PM concentrations at different microenvironments throughout the LU network measured through the use of stationary and personal measurements over an employee's 8-hour shift 2. All-cause sickness absence incidence rates for LU employees in different exposure categories from 2014 to 2019 inclusive measured using sickness absence data from the LU HR database	—

Countries

England, United Kingdom

Contacts

Public ContactTransport for London Occupational Health Department

luohme@tube.tfl.gov.uk-

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026