Severity
The mean severity of the abdominal attacks was higher than in other
clusters. Additionally, significant differences were found between the
abdominal and three other clusters (urogenital, facial, oropharyngeal),
and between the extremities to other clusters.
Limitation
The differences between the five clusters in the patient’s perceived
degree of limitation follow a similar pattern. Significant differences
were found between the limitation casused by abdominal attacks and other
clusters, the extremities and other clusters, and between facial to the
other clusters. The limitation caused by oropharyngeal attacks was
evaluated as very significant as compared to the abdominal and the
extremities.