Table 2:

Inter- and intraobserver agreement regarding question 4 (best final management choice)

	Categories^{^a}	All Cases (n = 35)	Patients in RCTs (n = 14)	Others (n = 21)
Interobserver agreement
All raters (n = 22)	5	0.219 ± 0.017	0.225 ± 0.020	0.190 ± 0.025
All raters (n = 22)	2	0.111 ± 0.018	0.151 ± 0.036	0.072 ± 0.020
Surgeons (n = 6)	5	0.252 ± 0.025	0.202 ± 0.043	0.271 ± 0.033
Surgeons (n = 6)	2	0.114 ± 0.084	0.063 ± 0.131	0.148 ± 0.109
>10 years' experience (n = 13)	5	0.210 ± 0.019	0.203 ± 0.030	0.199 ± 0.025
>10 years' experience (n = 13)	2	0.062 ± 0.030	0.120 ± 0.050	0.024 ± 0.038
>15 FD experiences (n = 9)	5	0.182 ± 0.029	0.258 ± 0.042	0.116 ± 0.040
>15 FD experiences (n = 9)	2	0.093 ± 0.032	0.201 ± 0.055	0.018 ± 0.040
Intraobserver agreement
Rater 1	5	0.465 ± 0.115	0.432 ± 0.162	0.465 ± 0.163
Rater 1	2	0.634 ± 0.109	0.340 ± 0.178	0.463 ± 0.195
Rater 2	5	0.387 ± 0.112	0.421 ± 0.175	0.333 ± 0.143
Rater 2	2	0.243 ± 0.175	0.176 ± 0.272	0.271 ± 0.208
Rater 3	5	0.501 ± 0.104	0.246 ± 0.141	0.629 ± 0.124
Rater 3	2	0.382 ± 0.114	0.263 ± 0.154	0.442 ± 0.160
Rater 4	5	0.634 ± 0.109	0.509 ± 0.178	0.707 ± 0.129
Rater 4	2	0.651 ± 0.129	0.571 ± 0.198	0.712 ± 0.153

↵a The number 5 indicates that answers were treated as 5 categories: FD, coiling, observation, occlusion of the parent vessel, and surgical clipping. The number 2 indicates that answers were treated as 2 categories: flow diversion versus all other treatment groups.