The frequency of renal involvement in HSP -
20-40%
>80%
40-60%
10%
The reported incidence of renal involvement in HSP varies considerably between different studies.
This may be because of the different criteria used to describe the involvement & the variability of the length used to follow up.
In different studies, incidence of pediatric renal involvement in HSP was between 20-56% and in adults 50-78%