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. Author manuscript; available in PMC: 2015 Mar 9.
Published in final edited form as: Occup Environ Med. 2008 Apr 16;65(6):371–378. doi: 10.1136/oem.2007.036913

Table 5.

Cohort studies of refinery work and non-Hodgkin’s lymphoma (NHL)

Author, year (Reference) RR CIlow CIup N Location Exposure Outcome All cause
SMR		 Adj RR Adj CIlow Adj CIup
Collingwood et al 199651 0.71 0.09 2.57 2 Paulsboro, New Jersey Employed 30+ years LR SMR 0.93 0.76 0.07 2.19
Consonni et al 199952 2.12 0.68 4.95 5 Northern Italy Total cohort NHL SMR 0.87 2.46 0.78 5.08
Dagg et al 199253 0.55 0.01 3.05 1 Chevron, El Segundo Employed 30+ years LR SMR 0.73 0.75 0.00 2.94
Dagg et al 199253 2.26 0.97 4.45 8 Chevron, Richmond Employed 30+ years LR SMR 0.86 2.71 1.16 4.90
Divine et al 199954 0.3 0.1 0.7 5 Texaco Mortality Study Employed 30+ years LR SMR 0.79 0.38 0.12 0.78
Gun et al 200611 0.99 0.62 1.50 22 Health Watch Total cohort (men) NHL SMR 0.72 1.38 0.87 2.02
Honda et al 199555 0.96 0.51 1.64 13 Illinois refinery Hourly LR SMR 0.82 1.17 0.62 1.89
Huebner et al 200456 1.46 0.86 2.3 18 Exxon Mobile, Baton
Rouge		 Employed 30+ years NHL SMR 0.79 1.86 1.10 2.82
Huebner et al 200456 0.66 0.27 1.36 7 Exxon Mobile, Baytown Employed 30+ years NHL SMR 0.79 0.83 0.33 1.57
Kaplan 198657 0.9 0.51 1.46 16 US refinery workers,
TCA, API		 Total cohort LR SMR 0.78 1.15 0.66 1.79
Lewis et al 200058 1.09 0.68 1.65 22 Canada, Exxon Mobile Total cohort (men) NHL SMR 0.92 1.19 0.74 1.73
Pukkala 199859 2.01 1.00 3.59 11 Finland Blue collar workers NHL incidence na* na na na
Satin et al 199660 0.27 0.03 0.97 2 Gulf/Chevron, Pt Arthur Employed 30+ years LR SMR 0.88 0.31 0.03 0.87
Sorahan et al 200228 1.22 0.97 1.51 84 8 British oil refineries Total cohort (men) LR SMR 0.88 1.39 1.11 1.70
Thomas et al 198261 1.57 0.75 2.89 10 OCAW Retired NHL PMR na* na na na
Tsai et al 199362 1.21 0.15 4.37 2 Shell, Martinez Total cohort LR SMR 0.89 1.36 0.13 3.90
Tsai et al 199627 6.75 2.48 14.69 6 Shell, Deer Park Employed 30+ years LR SMR 1.04 6.91 2.49 13.55
Tsai et al 200363 2.32 0.48 6.79 3 Norro, LA Total cohort LR SMR 0.74 3.15 0.59 7.71
Waxweiler et al 198364 0.68 0.18 1.74 4 Texas City Hourly LR SMR 0.8 0.85 0.22 1.89
Wong et al 2001a65 1.16 0.24 3.40 3 Mobil, Beaumont Employed 30+ years NHL SMR 0.94 1.24 0.23 3.04
Wong et al 2001b66 1.14 0.24 3.35 3 Mobil, Torrance Hired 40+ years ago NHL SMR 0.91 1.25 0.24 3.07

Adj, adjusted for the healthy worker effect; CIlow, lower 95% CI; CIup, upper 95% CI; exposure, the exposure category selected for this meta-analysis; LR, lymphosarcoma and reticulosarcoma; N, number of cases in the selected exposure category; PMR, proportionate mortality ratio; SMR, standardised mortality ratio; self-report, “Yes” means exposure history based primarily on self-reported work history.