The three major epidemiologic techniques are descriptive, analytic, and experimental. While all three can be used in the investigation of disease occurrence, the method used most is descriptive epidemiology. Once the basic epidemiology of a disease has been described, analytical methods can be used to study the disease further, and an experimental approach can be developed to test a hypothesis.

In descriptive epidemiology, data that describe the occurrence of the disease are collected by various methods from all relevant sources. The data is th

In NSW in 2000, smoking caused an estimated 6,578 deaths overall, with 4,322 males and 2,256 females estimated to have died due to smoking. This represents 18.5% of all male 10.3% of female deaths respectively. In 1999-00 it is estimated that smoking caused 35,277 hospitalisations among males and 18,531 hospitalisations among females. This represents 4.0% of all male 1.8% of female hospitalisations respectively.

The Quit campaign is a national government and non-government run program with the aim of reducing smoking rates in Australia. It combines advertising with:

Total deaths (all causes) 7316 4651 2665 100.0 1.57

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