Attfield and Costello* | Vacek et al | |
---|---|---|
Cohort size | 5408 | 7052 |
Eligibility criteria | Male | Male |
Employed 1950–1982 | Employed 1947–1998 | |
X-rayed by DIH | ||
Follow-up | Through 1994 | Through 2004 |
Lung cancer deaths | 208 | 359 |
Ascertainment of vital status | Vermont vital records | NDI search |
DIH listing of deaths | SSA vital status search | |
Social Security death index | Quebec vital records search | |
Current employee listings | Vermont vital records | |
Current pension recipient listings | SS death index | |
Personal contacts | Obituary and genealogy websites | |
Data sources | DIH surveillance programme records | DIH surveillance programme records |
Group insurance records | ||
Pension records | ||
Other studies4–6 | ||
Job-exposure matrix | Modification of Davis et al | Verma et al |
Dust measurements conversion | 1 mppcf=0.0075 mg/m3 silica | 1 mppcf=0.010 mg/m3 silica |
Exposure–response analysis | Poisson regression | Conditional logistic regression |
*Based on data collected and compiled by Graham et al.2
DIH, Division of Industrial Hygiene; mppcf, millions of particles per cubic foot; NDI, National Death Index; SS, Social Security; SSA, Social Security Administration.