Table 2.

Incidence of anti-allergic drug prescription in patients after prescription of gastric acid inhibitors or control medications

	Person-years	# with anti-allergic prescription	Incidence rate %	Rate ratio	p-value
Persons with previous gastric acid inhibitor prescription
Total	117,287	7706	6.57 (6.42–6.72)	3.07 (2.89–3.27)	<0.001
Males	46,002	2383	5.18 (4.97–5.39)	2.93 (2.66–3.22)	<0.001
Females	71,285	5323	7.47 (7.27–7.67)	2.92 (2.69–3.17)	<0.001
Age < 20 y	9,543	1058	11.09 (10.42–11.75)	2.04 (1.20–3.45)	0.008
20–39 y	48,502	3636	7.50 (7.25–7.74)	2.41 (2.01–2.91)	<0.001
40–59 y	47,097	2467	5.24 (5.03–5.44)	2.52 (2.30–2.77)	<0.001
≥60 y	12,145	545	4.49 (4.11–4.86)	2.22 (1.96–2.51)	<0.001
Persons with previous C09/C10 prescription
Total	53,793	1151	2.14 (2.02–2.26)
Males	28,549	505	1.77 (1.61–1.92)
Females	25,244	646	2.56 (2.36–2.76)
Age < 20 y	257	14	5.45 (2.59–8.30)
20–39 y	3,704	115	3.10 (2.54–3.67)
40–59 y	26,190	544	2.08 (1.90–2.25)
≥60 y	23,642	478	2.02 (1.84–2.20)

Incidence rates and 95% confidence intervals (CI) of anti-allergic drug prescriptions in individuals with acid inhibitor medication and with anti-hypertensive or lipid-modifying (C09/C10) drug prescriptions from data of the Austrian county Burgenland and rate ratios for an anti-allergic prescription in individuals with acid inhibitor medication relative to those with C09/C10 prescriptions. p values based on Wald chi-square test