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Table 9: Initial outcome of endovascular procedure: operator self assessment
Randomized Treatment Absolute Difference
Hydrogel Bare Platinum
No. % No. % (95% CI)
Total no. patients randomized 249 250 
    No coiling done 5 2.0 2 0.8 
    Consent withdrawn 1 0.4 0 0 
Degree of occlusion (operator opinion)^* 
    Complete 115/243 47.3 118/248 47.6 −0.3% (−9.0% to +8.5%)
    Nearly complete 76/243 31.3 94/248 37.9 −6.6% (−14.9% to +1.8%)
    Incomplete 52/243 21.4 36/248 14.5 +6.9% (+0.1% to 13.7%)
Note:—CI indicates confidence interval.
* χ² test for trend, P = .3.

	Randomized Treatment				Absolute Difference
	Hydrogel		Bare Platinum		Absolute Difference
	No.	%	No.	%	(95% CI)
Total no. patients randomized	249		250
No coiling done	5	2.0	2	0.8
Consent withdrawn	1	0.4	0	0
Degree of occlusion (operator opinion)^*
Complete	115/243	47.3	118/248	47.6	−0.3% (−9.0% to +8.5%)
Nearly complete	76/243	31.3	94/248	37.9	−6.6% (−14.9% to +1.8%)
Incomplete	52/243	21.4	36/248	14.5	+6.9% (+0.1% to 13.7%)