Comparative Effectiveness of Surgical, Endovascular, and Conservative Strategies for Unruptured Intracranial Aneurysms.

For the posterior subgroup, only the direct comparison between clipping and coiling was available (OR, 4.85 [95% CI, 0.28–82.57]), suggesting a nonsignificant trend that clipping may be associated with higher mortality, but this estimate was very imprecise and based on limited data.

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In the posterior subgroup, clipping showed a trend toward worse functional outcomes compared with coiling (OR, 4.09 [95% CI, 0.80–20.86]) and conservative management (conservative versus clipping OR, 3.03 [95% CI, 0.47–8.02]).

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