Analytical approach of strategy, Basic Statistics

1. Comment on influence of study design, sampling strategy and scale of measurement of outcome variable, on your choice of analytical approach

Study design: the study design is cross section study design. This design with a binary exposure will present these results:

For numerical outcome: differences in means and t-test.
For binary outcome: risk ratio/odd ratio (OR).
For rate outcome: rate ratio.
In this study results are going to be expressed as adjusted odds ratios and 95% confidence intervals. With statistical significance at the conventional p < 0.05 level (two-tailed).

Sampling strategy: the sampling strategy in this study is random sampling. The influence of random sampling in this study is eliminating selection bias in subject assignments. Therefore, the results of the study would meet the generalizability and can be applied to the general population if the process of randomisation done correctly.

Outcome variable: the outcome variable in this study is vitamin D status which was measured by (25 hydroxyvitamin D [25 (OH) D] concentrations). This variable is dichotomous variable [vitamin D insufficiency: serum 25 (OH) D <50nmol/L and vitamin D Normal: serum 25 (OH) D >50nmol/L]. Therefore, the Binary logistic regressions will used this is because it allows one to fit a number of factors (dichotomous such as the status of vitamin D: insufficient and normal) and covariates simultaneously. Since this model is a logistic regression, model the log (OR) will be used.

2. Rationale for choice of any exploratory analytical approaches

3. Rationale for choice of any modelling approaches (both statistical method, and model building approach)

4. List of specific models to be fitted and what question you expect to answer with each

5. Assumptions to be tested for each analytical approach [and suggested alternative strategies if assumptions are not met]

6. Criteria that will be used for reporting significant associations

7. Dummy tables and/or graphs depicting the style of presentation of results from your proposed analyses. Remember that the format (headings and presentation) must be planned to a high level of reader-friendliness for the report.

Posted Date: 4/6/2013 5:33:27 AM | Location : United States







Related Discussions:- Analytical approach of strategy, Assignment Help, Ask Question on Analytical approach of strategy, Get Answer, Expert's Help, Analytical approach of strategy Discussions

Write discussion on Analytical approach of strategy
Your posts are moderated
Related Questions
'Statistics is the backbone of decision-making'. Comment.

mathametical examples of components

An audit of the accounting records of Loch Ness Ltd. for the year ending 30 June 2012 discovered that the ending inventory balance was over-valued by $35,000

order tomatoes in crates of 25 kg and he is able to stock a maximum of four crates or 100 kg of tomatoes. His experience taught him that the daily demand ranges from 0 to100 kg of

Write a short note on Sale of An Asset on account of Depreciation. Ans. An asset can be sold anytime before or after its useful life estimated time, in case the asset is sold more

costing and control of overheads

the resultant of two perpandicular forces of magnitude p each will be

a)  The US Food and Drug Administration has veto power over the choice of drug names. In 2004, it used this power regularly, rejecting 36% of the names proposed by companies for re

what is the advantages of face-to-face interview?