For a systematic review 1 a total of 8 studies were included with a total of 152 children. The overall success rate for all of the case series was 59.9% (91/152) (95% CI 52%-67%). There was no significant difference in the success rate of removing the foreign body based on the type of object: 73% (95% CI 56%-86%) for smooth regular objects vs. 77% (95% CI 62%-87%) for irregular objects. No adverse effects were reported in any of the published studies.
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