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Table 2. Precipitating factors that may have led to the development of Spontaneous Pneumomediastinum

From: Spontaneous primary pneumomediastinum: is it always benign?

Precipitating factor Frequency
Athletics activities 45 (13.3)
Cough 44 (13)
Snorting 19 (5.6)
Labor 4 (1.2)
Sneezing 4 (1.2)
Sever reaching/vomiting 21 (6.2)
Sex 1 (1.6%)
Total 138 (40.7)
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