13
My SPHPM Summer Vacation Program Experience Stephanie Di Palma
My SPHPM Summer Vacation Program
ExperienceStephanie Di Palma
My Desk
Trends in Incidence of out-of-hospital cardiac arrest in Perth, Western Australia, 1996-2010
Background
•Estimates of the incidence of out-of-hospital cardiac arrest (OHCA) are important to determine the burden of OHCA and provision of services.
•This study aims to investigate temporal trends in the incidence of OHCA in metropolitan Perth (Western Australia) between 1996 to 2010.
LOCATION: -Perth, Australia-single ambulance service(St John’s Ambulance)
Methods• Age and sex standardised incidence rates (ASIRs)
using the direct method were calculated for all Perth OHCA cases attended by St John Ambulance (Western Australia)(SJA-WA) using SJA-WA OHCA data.
• Australian Bureau of Statistics population numbers for the Perth Statistical Division were used for rate denominators and the 2011 Australian population used as the population standard.
• Incidence rates are reported per 100,000 population and in four age categories (paediatric=0-14, young adult=15-34, adult=35-64, older adults=65+).
My example of Direct Age & sex-standardisation
Results• Over the 15-year period, there were 13,280 OHCA attended by SJA-WA in Perth.
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
50
55
60
65
70
75
80
85
90
81.57
75.7276.94
75.8574.35
72.02
65.8967.08
69.65
65.0363.65
69.85
66.78
63.71
70.61
Incidence of OHCA in Perth, 1996-2010
Crude Rate
Direct Std Rate (4 age groups) (+data lables)
Year
Inci
denc
e(p
er 1
00,0
00 p
opul
atio
n)
Crude Incidence by age group
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Ratio of Crude Incidence Rates
Elderly Ratio Adult Ratio
Young Adult Ratio Pediatric Ratio
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
0
50
100
150
200
250
300
350
400
450
Crude Incidence Rates of OHCA by Age Category, Perth:
1996-2010
Pediatric (0-14) Young Adult (15-34) Adult (35-64)
Elderly (65+)
Inci
denc
e (p
er 1
00,0
00 p
opul
atio
n)
Conclusions•Overall, a decreasing temporal trend in the
incidence of OHCA in Perth was observed prior to 2002, and is largely attributed to a decreasing incidence in the population aged over 65 years.
•ASIRs in Perth have since remained fairly
constant.
•Australia-wide OHCA incidence data is required to form the basis for monitoring the impact of public health and clinical interventions.
Acknowledgements
• Ian Jacobs- SJA(WA) cardiac arrest registry• Dr Janet Bray, Monash University• Prof Judith Finn, Aus-ROC Director • Dr Lahn Straney, Monash University• Kylie Dyson, Monash University
St John Ambulance, Western Australia
2013 Spark of Life (SOL) Conference
