What delayed people from leaving the Twin Towers*

Gathering personal items40 percent

Seeking out friend/co-worker33 percent

Searching for others26 percent

Phone calls18 percent

Shutting down computer8 percent

Waiting for direction7 percent

Gathering safety equipment5 percent

Changed shoes3 percent

Seeking permission to leave1 percent

*1,444 responses from occupants of World Trade Center towers who evacuated on Sept. 11.

SOURCE: DR. ROBYN GERSHON, MAILMAN SCHOOL OF PUBLIC HEALTH OF COLUMBIA UNIVERSITY.

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