Table 2:

Comparison of intraobserver agreement for assessment of aneurysm treatment using 4-, 3-, and 2-response scales, and “better/same/ worse” scale

Assessment	Observer 1		Observer 2
Assessment	Concordant Rate p	κ (95% CI)	Concordant Rate p	κ (95% CI)
Initial angiogram
4-Response	.70	0.67 (0.57–0.77)^*	.63	0.48 (0.34–0.62)^*
3-Response	.74	0.65 (0.54–0.76)^*	.69	0.50 (0.35–0.65)^*
2-Response	.91	0.66 (0.47–0.84)^†	.94	0.56 (0.28–0.85)^††
Follow-up angiogram
4-Response	.75	0.78 (0.69–0.87)^*	.77	0.78 (0.68–0.88)^*
3-Response	.78	0.75 (0.65–0.86)^*	.83	0.77 (0.65–0.88)^*
2-Response	.99	0.97 (0.91–1.00)^†	.96	0.89 (0.77–1.00)^†
Comparing initial with follow-up
Better/same/worse	.82	0.71 (0.58–0.84)^*	.78	0.64 (0.49–0.78)^*
Not worse/worse	.93	0.80 (0.66–0.94)^†	.92	0.78 (0.63–0.92)^†