STAT6000 Statistics for Public Health

This assessment addresses the following learning outcomes:

1. Understand key concepts in statistics and the way in which both descriptive and inferential statistics are used to measure, describe and predict health and illness and the effects of interventions. 2. Apply key terms and concepts of statistics, including; sampling, hypothesis testing, validity and reliability, statistical significance and effect size. 3. Interpret the results of commonly used statistical tests presented in published literature.

Instructions: This assessment requires you to read two articles and answer a series of questions in no more than 2000 words. Most public health and wider health science journals report some form of statistics. The ability to understand and extract meaning from journal articles, and the ability to critically evaluate the statistics reported in research papers are fundamental skills in public health. Paper 1: Lam, T., Liang, W., Chikritzhs, T., & Allsop, S. (2014). Alcohol and other drug use at school leavers celebrations. Journal of Public Health, 36(3), 408-416. Retrieved from: http://jpubhealth.oxfordjournals.org/content/early/2013/08/26/pubmed.fdt087.full.pdf+html

Read the Lam et. al. (2014) research article and answer the following questions:

1. This paper presents two hypotheses. State the null and alternative hypothesis for each one, and describe the independent and dependent variables for each hypothesis. 2. What kind of sampling method did they use, and what are the advantages and disadvantages of recruiting participants in this way? 3. What are the demographic characteristics of the people in the sample? Explain by referring to the descriptive statistics reported in the paper. 4. What inferential statistics were used to analyse data in this study, and why? 5. What is the odds ratio for engaging in unprotected sex (compared with those who engaged in safety strategies with the greatest frequency)? Interpret this by explaining what the odds ratio is telling us, including any variables that were controlled for in the model. 6. How representative do you think the sample is of the national population of schoolies? Explain why.

Paper 2: Wong, M. C., S., Leung, M. C., M., Tsang, C. S., H., . . . Griffiths, S. M. (2013). The rising tide of diabetes mellitus in a Chinese population: A population-based household survey on 121,895 persons. International Journal of Public Health, 58(2), 269-276. Retrieved from: http://dx.doi.org.ezproxy.laureate.net.au/10.1007/s00038-012-0364-y

Read the Wong et. al. (2014) paper and answer the following questions: 1. Describe the aims of the study. Can either aim be restated in terms of null and alternative hypotheses? Describe these where possible. 2. What are the demographic characteristics of the people in the sample? Explain by referring to the descriptive statistics reported in the paper. 3. What inferential statistics were used to analyse data in this paper, and why? 4. What did the researchers find when they adjusted the prevalence rates of diabetes for age and sex? 5. Interpret the odds ratios for self-reported diabetes diagnosis to explain who is at the greatest risk of diabetes. 6. What impact do the limitations described by the researchers have on the extent to which the results can be trusted, and why?

Answer

Pls complete the following questionnaire by putting an ‘X’ against correct option:

1. Gender

1. Age

1. Do you suffer from any known disease? If yes, pls mention disease name.

Disease Name: ____

1. Have you heard of the community health service centre?

1. Are you enrolled for local community health survey?

1. Have you used the health services?

1. How many times have you used the services during last 6 months?

1. How was the experience when you used the services, if applicable?

1. Will you be willing to use these health services again? Why or why not? (pls use the empty space to write the response to second part)

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