Spine
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Single-center retrospective chart review study. ⋯ IVC filters in this high-risk spine surgery cohort achieved a relatively low rate of DVT and PE as well as a low complication rate, whereas several patient characteristics were identified that correlated with VTE events and filter retrieval outcomes.
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Retrospective cohort study with interrupted time series analysis. ⋯ 3.
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Retrospective cohort study. ⋯ Level 3.
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A retrospective study. ⋯ Level III.