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. 2009 Mar;47(4):1088–1095. doi: 10.1016/j.neuropsychologia.2008.12.036

Table 3.

Stress measures Taxi drivers mean (S.D.) Controls mean (S.D.)
Perceived Stress Scale 12.75 (7.30) 11.65 (7.13)
State-Trait Anxiety Inventory (State) 31.45 (9.13) 28.10 (5.49)
State-Trait Anxiety Inventory (Trait) 38.10 (10.33) 35.50 (11.98)
Life stress ratinga 4.40 (1.75) 4.80 (2.41)
Job stress ratinga 5 (1.91) 4.50 (2.03)
a

Ratings from 1 (no stress) to 10 (very high stress).