Analysis Design

To begin analyzing your data, click on “analysis” or “statistics,” and select a test module.

Enter table/graph title

Each analysis module has a text box for you to enter table/graph title. If left unfilled, Empower will use default title.

Select population

Each analysis module has an option for you to limit the analysis to subset of the whole population, which is
“Select population” text box. You can type in the condition for selecting the population or select the condition from the dropdown list.  For example, if you want to limit your analysis to people with AGE>=15, type the condition as: ScreenHunter_01 Sep. 28 18.03.gif

Set decimal

Each analysis module has an option for you to specify the digits in output tables, which is “Set decimal to:” dropdown box. 

ScreenHunter_02 Sep. 28 18.15.gif

Select output format

Most analysis modules have option for you to specify the statistics that you want to put to table. Eg.  β+se for regression. 

ScreenHunter_03 Sep. 28 18.21.gifScreenHunter_04 Sep. 28 18.22.gif

Select/enter variable(s)

In “analysis design window”, you can enter variable(s) to the specified list box or text box by several ways:

To add variable to list box:

(1)    Drag and drop the variable from variables name list (right panel) to the specified list box;

(2)    Or click the list box (the title of the box will be highlighted), double click the variable name in the variables name list (right panel), this variable will be added to the list box.

To add variable to text box:

(1)    Drag and drop the variable from variables name list (right panel) to the specified text box;

(2)    Select the variable from dropdown list by click the arrow the text box;

(3)    Type in the variable name in the text box.

Save analysis design

In “analysis design window”, after you finished design of a selected analysis module, click “Save” button of that module.  A new entry which is the title of the analysis table/graph will be added to the left panel.

View table/graph (View Results)

After you finished design of a selected analysis module in “analysis design window”, click “View table” or “View graph” button of that module. Empower(R) will write R code for the analysis and call R to execute the code. When R finished the execution, you will see the output tables or graph immediately. In the left panel of main window which lists project name, variable and each analysis table/graph title, you will see the title of the analysis table/graph added to the list, click “+” to expand this list, you will see two sub-items, one is the R code, another is the output table.

View more output files

To view more outputs, such as R log, detailed R output or more graphs, etc., right click the output file (sub-item in the left panel) and then select the file from popup list.

Review/revise the design of previously created table

To view the design of previously created table/graph, click the title of the table/graph in the left panel.  This will bring up the table design.  You can change the entry, revise the analysis or save to a new table/graph.