Table 3.

Hospitalizations in all age groups (poisson regression used to test significance between rates of hospitalizations in different age groups)

Age group	Follow-up years	No. of hospitalizations	Rate of hospitalization per 100 person years	Incidence rate ratio	p value
<35y	151	97	64.2	1.0	Reference
35-44y	135.6	79	58.2	0.9	<0.001
45-54y	177.0	171	96.6	1.7	<0.001
55-64y	252.9	262	103.6	1.8	<0.001
65-74y	523.3	394	75.3	1.3	<0.001
75-84y	507.2	632	124.6	2.2	<0.001
85 + y	108.7	97	89.2	1.6	<0.001
Total	1856.1	1732	93.3