This figure shows the notification rate of unspecified hepatitis B in Australia in 2011 by age group and sex. The figures show a peak of notification rates among males aged 30 to 34 years, and females aged 25 to 29 years. The figure also shows that the notification rate is higher among males in all age groups, except those aged 25 to 29, 30 to 34, 75 to 79, and 85 years and over.