Cluster Prodrome No Attack Attack RR X2 p Specificity Sensitivity
Abdomen
No
72 (56.7%)
55 (43.4%)
2.30
58.96
<.001
99.0
57.0
Yes 0 65 (100%)
Urogenital No 170 (94.4%) 10 (5.6%) 16.39 85.63 <.001 98.0 56.0
Yes
1 (8.3%)
11 (91.7%)
Facial No 119 (65.7%) 62 (34.3%) 2.94 19.02 <.001 99.0 18.0
Yes 0 11 (100%)
Extremities No 123 (84.8%) 22 (15.2%) 5.55 75.28 <.001 95.0 64.0
Yes
8 (17%) 39 (83%)
Oro-pharyngeal
No
181 (97.8%)
4 (2.2%)
33.31
72.43
<.001
98.0
57.0
Yes
2 (28.6%)
5 (71.4%)