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. Author manuscript; available in PMC: 2015 Mar 1.
Published in final edited form as: JAMA Psychiatry. 2014 Mar 1;71(3):319–325. doi: 10.1001/jamapsychiatry.2013.4174

Table 3.

Rate of serious transport accident during medication periods compared to non-medication periods among Swedish adult ADHD patients.

Gender Medication Person-years at risk Number of accidents Between-individual Within-individual
Hazard Ratio 95% Confidence interval Hazard Ratio 95% Confidence interval
Males medicated 8,377 144 0.71 0.57–0.89 0.42 0.23–0.75
non-medicated 33,416 753 1 - 1 -
Females medicated 6,195 67 0.92 0.78–1.23 2.35 0.83–6.64
non-medicated 21,204 263 1 - 1 -