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. Author manuscript; available in PMC: 2019 May 1.
Published in final edited form as: Epidemiology. 2018 May;29(3):315–322. doi: 10.1097/EDE.0000000000000808

Table 2.

Lung function measurements in GuLF STUDY home visit participants by oil spill response and clean-up exposures (n=7,775)

FEV1, mL FVC, mL FEV1/FVC%

n Mean (SE)a Mean (SE)a Mean (SE)a
Non-worker 1481 3007 (26) 3803 (30) 79.17 (0.31)
Worker 6294 3020 (23) 3814 (27) 79.26 (0.28)

Job class among workersb

Support 606 3110 (36) 3872 (41) 80.27 (0.42)
Land Clean-up 1029 3039 (31) 3840 (36) 79.29 (0.37)
Decontamination 1248 2991 (31) 3788 (36) 79.04 (0.37)
Water Clean-up 920 3073 (33) 3864 (38) 79.65 (0.39)
Operations 1298 3032 (31) 3846 (36) 79.01 (0.37)
Response 1193 3063 (31) 3858 (36) 79.41 (0.37)

Potential exposure to dispersant among workersc

No 5242 3010 (23) 3801 (27) 79.25 (0.28)
Yes 790 2992 (31) 3786 (36) 79.06 (0.37)

Potential exposure to burning oil/gas among workersd

None 5609 3049 (29) 3848 (34) 79.38 (0.34)
Low/Medium 507 3058 (38) 3858 (44) 79.30 (0.45)
High 68 2881 (75) 3728 (87) 77.74 (0.89)

Abbreviations: GuLF STUDY, Gulf Long-Term Follow-up Study; FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; mL, milliliters; SE, standard error

a

Adjusted for age, height, height2, race, gender, and ethnicity

b

Job class was hierarchical, starting with the highest class first (response)

c

n=262 missing due to unknown dispersant status

d

n=110 missing due to unknown burning oil/gas status