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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VICTORIA

HOW HAVE PERSONAL CRIME VICTIMISATION RATES CHANGED OVER TIME?

The fitted function analysis showed a decline in the victimisation rate for face-to-face threatened assault in Victoria since 2008-09.

Although no fitted functions that met the inclusion criteria were identified for physical assault, when undertaking significance testing (comparing two time points) the victimisation rate for physical assault was significantly lower in 2016-17 (2.4%) compared to 2008-09 (3.3%).

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

VICTIMISATION RATES, Selected personal crimes, Victoria, 2008-09 to 2016-17(a)(b)
Graph: shows data points for victimisation rates in Victoria for all personal crimes and fitted function for face-to-face threatened assault
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 limited impact on the analysis, as only survey estimates with RSEs of 25% or less were included in the analysis. For further information on survey error refer to the Technical Note. (b) Fitted function is: face-to-face threatened assault is a polynomial function with equation y = 0.0471x2 - 0.5958x + 4.4548 RČ = 0.8182.


HOW HAVE HOUSEHOLD CRIME VICTIMISATION RATES CHANGED OVER TIME?

The fitted function analysis showed a decline in the victimisation rate for malicious property damage in Victoria since 2008-09. The victimisation rate for break-in, attempted break-in, and theft from a motor vehicle also showed a decline over the same period, but to a lesser degree.

Although no fitted functions that met the inclusion criteria were identified for other theft, when undertaking significance testing (comparing two time points) the victimisation rate for other theft was significantly lower in 2016-17 (3.0%) compared to 2008-09 (4.4%).

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

VICTIMISATION RATES, Selected household crimes, Victoria, 2008-09 to 2016-17(a)(b)
Graph: shows data points for victimisation rates in Victoria for all household crimes and fitted functions for break-in, attempted break in, theft from a motor vehicle and malicious property damage
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 limited impact on the analysis, as only survey estimates with RSEs of 25% or less were included in the analysis. For further information on survey error refer to the Technical Note. (b) Fitted functions are: break-in is a polynomial function with equation y = 0.0316x2 - 0.2994x + 2.9738 RČ = 0.912; attempted break-in is a polynomial function with equation y = 0.0497x2 - 0.5618x + 3.1357 RČ = 0.9746; theft from a motor vehicle is a polynomial function with equation y = 0.0702x2 - 0.824x + 5.6405 RČ = 0.8531; malicious property damage is a polynomial function with equation y = 0.0867x2 - 1.4852x + 12.014 RČ = 0.9873.