Table 2.

Risk of symptoms in children in a population exposed to the Eyjafjallajökull volcanic eruption by residence exposure level in 2010.

	Non-exposed 2010 (n = 372)		Low exposure 2010* (n = 78)		Medium exposure 2010* (n = 485)		High exposure 2010* (n = 218)
	OR (95% CI)†	% (n/N)	OR (95% CI)†	% (n/N)	OR (95% CI)†	% (n/N)	OR (95% CI)†	% (n/N)
Respiratory symptoms	1 (reference)	23.4 (86/367)	0.85 (0.44 to 1.55)	19.5 (15/77)	1.47 (1.07 to 2.03)	31.4 (150/477)	1.52 (1.03 to 2.24)	31.9 (67/210
			1 (reference)		1.73 (0.97 to 3.27)		1.79 (0.96 to 3.50)
Stomach pain/nausea	1 (reference)	28.3 (104/367)	0.72 (0.39 to 1.28)	23.1 (18/78)	1.02 (0.75 to 1.39)	29.1 (139/478)	1.05 (0.71 to 1.53)	28.9 (61/211)
			1 (reference)		1.41 (0.81 to 2.58)		1.45 (0.79 to 2.75)
Anxiety/worries	1 (reference)	14.8 (54/364)	1.47 (0.75 to 2.76)	19.5 (15/77)	2.39 (1.67 to 3.45)	28.5 (136/478)	2.77 (1.81 to 4.27)	31.6 (66/209)
			1 (reference)		1.63 (0.90 to 3.10)		1.89 (1.00 to 3.74)
Behavioural problems	1 (reference)	18.5 (67/363)	0.69 (0.32 to 1.37)	13.0 (10/77)	0.96 (0.67 to 1.38)	17.9 (85/474)	1.27 (0.83 to 1.94)	23.2 (49/211)
			1 (reference)		1.39 (0.71 to 2.99)		1.84 (0.91 to 4.07)
Headache(s)	1 (reference)	20.9 (76/364)	1.18 (0.63 to 2.16)	23.1 (18/78)	1.91 (1.37 to 2.68)	31.0 (147/474)	2.19 (1.46 to 3.28)	33.6 (71/211)
			1 (reference)		1.61 (0.91 to 2.98)		1.85 (1.00 to 3.55)
Depressed mood	1 (reference)	22.0 (80/364)	0.83 (0.43 to 1.53)	18.2 (14/77)	1.14 (0.82 to 1.60)	23.8 (114/478)	1.35 (0.90 to 2.00)	27.6 (59/214)
			1 (reference)		1.38 (0.76 to 2.66)		1.62 (0.86 to 3.24)
Sleep disturbances	1 (reference)	21.0 (76/362)	0.85 (0.42 to 1.58)	16.9 (13/77)	1.10 (0.80 to 1.55)	22.9 (109/477)	1.65 (1.10 to 2.46)	29.0 (61/210)
			1 (reference)		1.29 (0.70 to 2.55)		1.95 (1.02 to 3.95)

*Regions are seen in Figure 1

^†OR and 95% CI from multivariate logistic regression adjusted for age and gender.