Table 5.

Risk of self-reported MI/fatal CHD by residential proximity to the spill and work duration. GuLF STUDY, 2010–2016

Duration of follow-up:	12 months		24 months		36 months		48 months
	Risk*	RD	Risk*	RD	Risk*	RD	Risk*	RD
Residential proximity to the spill	Among the full study cohort (N=31,609)
Away from the spill	0.003	ref	0.007	ref	0.009	ref	0.012	ref
Direct/indirect	0.004	0.001	0.009	0.001	0.013	0.003	0.018	0.005
Work duration	Among clean-up workers only (n=24,375)
1–30 days	0.002	ref	0.006	ref	0.010	ref	0.011	ref
31–90 days	0.004	0.002	0.008	0.002	0.012	0.002	0.014	0.003
91–180 days	0.004	0.002	0.008	0.002	0.011	0.001	0.018	0.007
>180 days	0.004	0.002	0.010	0.003	0.013	0.003	0.017	0.006

Risks are equal to the proportion of the number of cumulative cases at the indicated point in time divided by the total number of study participants at risk at that time.

Proximity to the oil spill is defined as living in, or adjacent to, a county or parish with coastline oiled during the spill.

^*The risks are weighted to account for confounders and predictors of censoring.