Appendix 2.

Depression and PTS Associated With Oil Spill Response and Clean-up Experiences, Adjusted for Level of TH Exposure (Workers Only)

	Prevalence Ratio* (95% CI**)
Predictor	Depression (n=6,215)		PTS (n=6,366)
Smelled oil, dispersants, or cleaning chemicals	1·57	(1·38, 1·78)	2·19	(1·66, 2·88)
Skin/clothing in contact with oil/tar/oily water	1·04	(0·91, 1·20)	1·14	(0·86, 1·51)
Had to stop working due to heat	1·36	(1·22, 1·52)	1·40	(1·14, 1·72)
Job involving oily wildlife/plants/animals	0·95	(0·85, 1·05)	1·19	(0·97, 1·47)
Body/clothing ever became wet with chemicals	1·06	(0·96, 1·18)	1·20	(0·98, 1·48)
Any self-reported work with dispersants	1·06	(0·92, 1·21)	0·99	(0·78, 1·26)
Worked as a commercial fisherman	1·40	(1·23, 1·60)	1·97	(1·54, 2·50)

^*Adjusted for age, sex, race, annual household income, marital status, employment status, financial worries, displaced by Hurricanes Isaac or Katrina, mental health diagnosis prior to the spill, other oil industry experience, duration of clean-up work, TH exposure level.

^**CI denotes confidence interval.