Table 5.

Risk of symptoms in children in a population exposed to the Eyjafjallajökull volcanic eruption by residence exposure level in 2013.

	Non-exposed 2013 (n = 189)		Low exposure 2013* (n = 51)		Medium exposure 2013* (n = 287)		High exposure 2013* (n = 126)
	OR (95% CI)†	% (n/N)	OR (95% CI)†	% (n/N)	OR (95% CI)†	% (n/N)	OR (95% CI)†	% (n/N)
Respiratory symptoms	1 (reference)	18.5 (34/184)	1.36 (0.59 to 2.99)	22.0 (11/50)	1.34 (0.82 to 2.22)	23.5 (67/285)	1.27 (0.69 to 2.34)	23.4 (29/124)
			1 (reference)		1.07 (0.53 to 2.30)		1.03 (0.47 to 2.36)
Stomach pain/nausea	1 (reference)	28.1 (52/185)	0.20 (0.01 to 1.55)	24.5 (12/49)	0.27 (0.01 to 1.77)	28.2 (79/280)	0.21 (0.01 to 1.42)	22.0 (27/123)
			1 (reference)		1.23 (0.62 to 2.60)		0.88 (0.40 to 2.00)
Anxiety/worries	1 (reference)	24.0 (44/183)	0.75 (0.29 to 1.78)	16.3 (8/49)	1.41 (0.88 to 2.29)	27.2 (77/283)	1.43 (0.77 to 2.63)	24.0 (29/121)
			1 (reference)		1.92 (0.90 to 4.59)		1.70 (0.74 to 4.28)
Behavioural problems	1 (reference)	18.7 (34/182)	0.54 (0.17 to 1.41)	11.0 (5/47)	1.02 (0.62 to 1.71)	19.0 (53/278)	1.07 (0.57 to 2.00)	18.5 (22/119)
			1 (reference)		1.99 (0.82 to 5.98)		1.98 (0.75 to 6.24)
Headache(s)	1 (reference)	24.2 (45/186)	0.61 (0.24 to 1.43)	16.3 (8/49)	1.30 (0.81 to 2.08)	27.0 (33/122)	1.38 (0.76 to 2.49)	27.0 (33/122)
			1 (reference)		2.15 (0.98 to 5.25)		2.31 (0.98 to 6.00)
Depressed mood	1 (reference)	27.3 (50/183)	0.37 (0.13 to 0.90)	12.2 (6/49)	1.06 (0.68 to 1.68)	28.3 (80/283)	0.83 (0.46 to 1.49)	21.3 (26/122)
			1 (reference)		2.82 (1.24 to 7.63)		1.70 (0.74 to 4.28)
Sleep disturbances	1 (reference)	22.7 (42/185)	0.41 (0.13 to 1.04)	10.4 (5/48)	0.93 (0.58 to 1.51)	22.1 (62/280)	1.10 (0.62 to 1.96)	25.4 (31/122)
			1 (reference)		2.42 (1.00 to 7.23)		2.82 (1.10 to 8.73)

*Regions are seen in Figure 1

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