Table 2 Logistic regression of toxic and non‐toxic symptoms on oil exposure, perceived risk and emotional status (adjusted for age, gender, smoking deprivation, occupation).

Dependent variable	Model	Predictors	Odds ratio	95% CI
Toxic symptom reporting	1	Oil exposure	2.33	1.56 to 3.48 (p<0.001)
		Ex‐smokers	1.10	0.65 to 1.87 (p = 0.72)
		Current smokers	1.21	0.78 to 1.86 (p = 0.40)
		Deprivation	1.01	0.94 to 1.09 (p = 0.74)
		Perceived risk	1.76	1.19 to 2.61 (p = 0.005)
	2	Oil exposure	2.83	1.68 to 4.76 (p<0.001)
		Ex‐smokers	0.69	0.34 to 1.39 (p = 0.30)
		Current smokers	0.94	0.51 to 1.64 (p = 0.83)
		Deprivation	1.02	0.92 to 1.12 (p = 0.72)
		Perceived risk	1.03	0.62 to 1.73 (p = 0.91)
		Anxiety	1.38	0.76 to 2.51 (p = 0.30)
		Depression	1.18	0.67 to 2.05 (p = 0.57)
		Non‐toxic symptoms	26.21	15.8 to 43.4 (p<0.001)
Non‐toxic symptom reporting	3	Oil exposure	1.44	0.99 to 2.10 (p = 0.056)
		Ex‐smokers	1.66	0.96 to 2.86 (p = 0.07)
		Current smokers	1.32	0.82 to 2.12 (p = 0.25)
		Deprivation	0.99	0.91 to 1.07 (p = 0.71)
		Perceived risk	2.28	1.57 to 3.31 (p<0.001)
	4	Oil exposure	0.98	0.60 to 1.62 (p = 0.94)
		Ex‐smokers	1.76	0.84 to 3.68 (p = 0.13)
		Current smokers	1.49	0.80 to 2.77 (p = 0.21)
		Deprivation	0.93	0.84 to 1.03 (p = 0.17)
		Perceived risk	1.69	1.05 to 2.73 (p = 0.031)
		Anxiety	2.66	1.52 to 4.66 (p = 0.001)
		Depression	1.40	0.83 to 2.37 (p = 0.20)
		Toxic symptoms	25.53	15.5 to 42.1 (p<0.001)