4530.0 - Crime Victimisation, Australia, 2016-17 Quality Declaration 
Previous ISSUE Released at 11:30 AM (CANBERRA TIME) 16/02/2018   
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AUSTRALIA

HOW HAVE PERSONAL CRIME VICTIMISATION RATES CHANGED OVER TIME?

The fitted function analysis showed a decline in the victimisation rate for physical assault and face-to-face threatened assault in Australia since 2008-09, although the rate of this decline is slowing.

Although there were no fitted functions which met the inclusion criteria for non face-to-face threatened assault and robbery, when undertaking significance testing (comparing two time points), the victimisation rates were significantly lower in 2016-17 compared to 2008-09, with 0.9% compared to 1.2% for non face-to-face threatened assault, and 0.4% compared to 0.6% for robbery.

No fitted functions met the inclusion criteria for sexual assault, nor was there any significant difference in the sexual assault victimisation rate between 2008-09 and 2016-17.

VICTIMISATION RATES, Selected personal crimes, Australia, 2008-09 to 2016-17(a)(b)
Graph: shows data points for victimisation rates in Australia for all personal crimes and fitted functions for physical assault and face-to-face threatened assault
Australian Bureau of Statistics
© Commonwealth of Australia 2018.


Footnote(s): (a) The fitted functions used to analyse patterns of change in victimisation rates over time have not taken into account the survey error associated with the annual victimisation rates. This is expected to have a negligible impact on the analysis, as the survey error is small. For further information on survey error refer to the Technical Note. (b) Fitted functions are: face-to-face threatened assault is a power function with equation y = 3.7957x-0.179 RČ = 0.8671; physical assault is a polynomial function with equation y = 0.0093x2 - 0.1964x + 3.3095 RČ = 0.7133.

HOW HAVE HOUSEHOLD CRIME VICTIMISATION RATES CHANGED OVER TIME?

The fitted function analysis showed a decline in the victimisation rates for break-in and malicious property damage in Australia since 2008-09. The victimisation rate for attempted break-in, motor vehicle theft, theft from a motor vehicle, and other theft have generally declined over the same time period, although these have begun to plateau in recent years.

VICTIMISATION RATES, Selected household crimes, Australia, 2008-09 to 2016-17(a)(b)
Graph: shows data points for victimisation rates and fitted functions for all household crimes in Australia
Australian Bureau of Statistics
© Commonwealth of Australia 2018.


Footnote(s): (a) The fitted functions used to analyse patterns of change in victimisation rates over time have not taken into account the survey error associated with the annual victimisation rates. This is expected to have a negligible impact on the analysis, as the survey error is small. For further information on survey error refer to the Technical Note. (b) Fitted functions are: break-in is a logarithmic function with equation y = -0.347ln(x) + 3.271 RČ = 0.9292; attempted break-in is a polynomial function with equation y = 0.0369x2 - 0.464x + 3.3738 RČ = 0.8772; motor vehicle theft is a polynomial function with equation y = 0.0131x2 - 0.1926x + 1.2595 RČ = 0.9726; theft from a motor vehicle is a power function with equation y = 4.4089x-0.212 RČ = 0.9575; malicious property damage is a polynomial function with equation y = 0.0855x2 - 1.595x + 12.379 RČ = 0.9854; other theft is a polynomial function with equation y = 0.0405x2 - 0.5748x + 4.7476 RČ = 0.9166.