Injuries and post-traumatic stress following historic tornados: Alabama, April 2011.

Regarding demographic patient variables, males had significantly more severe injuries than females, X 2 (1, N = 1,146) = 6.74, p = .009, and injury severity increased with rising age, although this finding was only borderline significant, X 2 (1, N = 1,094) = 3.76, p = .052 ( Table 1 ).

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