The impact of pre- and postnatal exposures on allergy related diseases in childhood: a controlled multicentre intervention study in primary health care

Table 3 Incidence and odds ratios of allergy related diseases among 2 years old children

	Intervention cohort N = 1374			Control cohort N = 4780			Odds ratio^a(95% CI)
	Boys n (%)	Girls n (%)	Total n (%)	Boys n (%)	Girls n (%)	Total n (%)	Boys crude	Girls crude	Total crude	Total adjusted^b
Asthma	55	16	71	208	129	337	0.93	0.41	0.72	0.68
Asthma	(8.1)	(2.3)	(5.2)	(8.7)	(5.4)	(7.1)	(0.68-1.26)	(0.24-0.70)	(0.55-0.93)	(0.52-0.90)
Used asthma medication last 12 months	60	19	79	222	138	360	0.95	0.46	0.75	0.69
Used asthma medication last 12 months	(8.9)	(2.7)	(5.8)	(9.3)	(5.8)	(7.5)	(0.70-1.28)	(0.28-0.74)	(0.58-0.96)	(0.53-0.91)
Wheeze	201	139	340	702	553	1255	1.02	0.82	0.92	0.91
Wheeze	(30.7)	(20.4)	(25.4)	(30.3)	(23.9)	(27.1)	(0.84-1.23)	(0.66-1.00)	(0.80-1.05)	(0.79-1.06)
AD	109	107	216	427	360	788	0.87	1.02	0.94	0.93
AD	(16.5)	(15.8)	(16.1)	(18.5)	(15.5)	(17.0)	(0.69-1.10)	(0.81-1.30)	(0.80-1.11)	(0.78-1.10)
Ever used allergy medication	45	31	76	168	130	298	0.94	0.81	0.88	0.87
Ever used allergy medication	(6.7)	(4.5)	(5.6)	(7.1)	(5.5)	(6.3)	(0.67-1.32)	(0.54-1.20)	(0.68-1.14)	(0.66-1.15)

^aFor intervention cohort versus control cohort.
^bAdjusted for birthweight, maternal atopy, RS-virus infection, maternal health care centre, and the proportion of participants from each cohort in each public health centre.

ISSN: 1471-2458