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Table 3 Ratio of male to female prescribing prevalence by age category and study year and ratio of males to females registered on the database

From: The epidemiology of pharmacologically treated attention deficit hyperactivity disorder (ADHD) in children, adolescents and adults in UK primary care

Age Category 2003 2004 2005 2006 2007 2008
Prevalence 6–12 years 6.085 5.942 5.451 5.725 5.560 5.534
Registered on database 6–2 years 1.050 1.048 1.045 1.045 1.044 1.044
Prevalence 13–17 years 9.838 7.955 8.228 7.625 6.652 6.277
Registered on database 13–17 years 1.125 1.104 1.083 1.061 1.043 1.043
Prevalence 18–24 years 3.355 4.492 7.549 3.856 4.117 5.602
Registered on database 18–24 years 1.084 1.093 1.084 1.079 1.066 1.043
Prevalence 25–45 years 3.252 1.461 1.867 1.835 2.120 2.020
Registered on database 25–45 years 1.025 1.026 1.023 1.022 1.022 1.014
Prevalence >45 years 1.108 0.736 2.202 1.462 2.004 2.339
Registered on database >45 years 0.903 0.906 0.908 0.912 0.915 0.916