Deepwater Horizon oil spill exposures and nonfatal myocardial infarction in the GuLF STUDY

Table 4 Associations of oil spill exposure characteristics and nonfatal MI occurring after December 31st 2010. GuLF STUDY 2010–2013

	MI cases/ total N^a	RR^b (95% CI)
	Among workers and non-workers (N = 30,946; 135 cases)
Worked on clean-up
Yes	112/23362	1.83 (1.13, 2.94)
No	20/6852	ref
Residential proximity to oil spill^c
Direct/indirect	95/18444	1.17 (0.79, 1.74)
Away from the spill	37/11770	ref
	Among clean-up workers only (n = 23,896; 114 cases)
Maximum exposure job^d
Response Work	14/4305	0.61 (0.29, 1.27)
Operations Work	25/4200	0.97 (0.50, 1.89)
Clean-up on Water	17/3603	0.76 (0.38, 1.55)
Decontamination	26/3436	1.66 (0.87, 3.16)
Clean-up on Land	14/3484	0.88 (0.43, 1.82)
Administrative Support	16/4334	ref
Work duration
> 180 days	33/5157	1.99 (0.98, 4.04)
91–180 days	38/8038	1.35 (0.67, 2.70)
31–90 days	31/7314	1.27 (0.63, 2.59)
1–30 days	10/2853	ref
Ever had to stop work due to heat^d
Yes	51/7201	1.85 (1.25, 2.73)
No	55/13827	ref
Worked near burning oil^d
Yes	9/2068	0.93 (0.47, 1.84)
No	103/21294	ref
Maximum overall THC exposure
≥ 3.00 ppm	16/3315	1.34 (0.65, 2.76)
1.00–2.99 ppm	35/7169	1.05 (0.56, 1.96)
0.30–0.99 ppm	46/7662	1.65 (0.91, 2.99)
< 0.30 ppm	15/5190	ref

^aNumber of observations included in the fully adjusted model, by exposure status
^bRisk ratios (RR) adjusting for age, gender, BMI, education, smoking and residential proximity to the oil spill
^cModels adjust for duration of clean-up work in addition to the confounders age, gender, BMI, education, and smoking
^dModels adjust for duration of clean-up work in addition to the confounders age, gender, BMI, education, smoking and residential proximity to the oil spill

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