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. 2015 Oct 14;10(10):e0140450. doi: 10.1371/journal.pone.0140450

Table 4. Cumulative 1-year risks of recurrent SDH, according to selected combinations of predictive factors.

Cumulative 1-year risks (95% CI)
Males Females
Alcohol addiction + trauma diagnoses - operation 11.1% (8.7–13.5) 12.6% (8.4–16.9)
+ operation 21.4% (17.5–25.3) 17.6% (11.4–23.7)
Diabetes mellitus - operation 20.1% (13.8–26.5) 11.7% (4.4–18.9)
+ operation 25.3% (18.9–31.7) 7.3% (1.1–13.7)