. Author manuscript; available in PMC: 2015 Sep 1.

Published in final edited form as: Occup Environ Med. 2014 Oct 30;72(3):165–170. doi: 10.1136/oemed-2014-102382

Table 1. Description of cohort.

Company	Location	Product	Period in which styrene was used	Subjects eligible for inclusion in study	Number of subjects analysed^a
A	Staffordshire	Car bodies	1953-	All employees, 1.1.67-31.12.81	949
B	Lancashire	Panels for vehicles	1956-81	All employees in the glass-reinforced plastics department, 1.1.56-31.12.81	523
C	Avon	Car bodies, fuel tanks and other mouldings	1960-	All employees,1.1.63-29.2.84	3133
D	Dorset	Boats	1947-	All employees, 1.1.46-1.7.82	751
E	Avon	Panels for vehicles	1968-	All employees, 1.1.68-1.4.82	515
F	West Yorkshire	Pipes and vessels	1954-	All employees, 1.1.58-1.9.82	448
G	Nottinghamshire	Fabrications and decorative panels	1961-	All employees, 1.7.77-30.10.82	178
H	Bedfordshire	Fabrications and mouldings	1953-60	All employees, 1.1.53-31.12.60	1473

Six workers were each employed by two of the participating companies, and in this table were arbitrarily assigned to the first factory at which they worked. In subsequent analyses by level of exposure, their exposure histories at the two factories were combined.