Fig. 2

The cumulative proportions of results on the modified Rankin’s Scale (mRS). (A) at discharge from the hospital; (B) at 2 years after surgery. A score of 2 or less on the mRS (higher is worse) was defined as a favorable outcome.

The cumulative proportions of results on the modified Rankin’s Scale (mRS). (A) at discharge from the hospital; (B) at 2 years after surgery. A score of 2 or less on the mRS (higher is worse) was defined as a favorable outcome.