- Improving the performance in older browsers
- Select populations and measures
- Change the look of the table
- Calculate between percentiles and measurement values
- Calculations for multiple populations, measures, percentiles and measurement values
- Combining populations and measures for automated calculations
- Look up background information about studies and measures
Improving the performance in older browsers
In older browsers the DINED web application can respond slow, especially when a large number of populations and measures is selected. To increase the performance advanced options can be deactivated with the link in the top right corner of the screen. In that case it is not possible to use sliders to set the percentiles and measurement values on the 'set percentiles' and 'set measurements' tabs. Also the order of the rows and columns can not be rearranged by click and drag.
Select populations and measures
Using the DINED web application starts by selecting relevant populations and measures. This is done by clicking the checkbox of a population or measure or by using one of the quick links. With these links multiple populations or measures that fit the criteria of the link can be added to the selection. Links in a group tab will select only populations/measures on that tab. Links under the list of group names will select populations/measures on multiple tabs. Automated selection is limited to 1000 combinations of populations and measures (i.e. 1 population and 1000 measures or 20 populations and 50 measures).
The mean and standard deviation for the combinations of the selected populations (1) and measures (2) will show up in the table (3).
In case a no data is available for a mixed population, the button in the 'm+f' column (1) can be used to quickly create a combined population that contains the female and male population. See also combining populations.
When you click on the title of a population (1) the label of measures that are not available for this population will turn gray (2). It is then possible to use the 'available' link (3) to select all measures that are available for the highlighted population (4). This also works the other way around, when highlighting measures by clicking on their label or title.
Change the look of the table
The look of the table can be changed to better match the selected data.
Click on the 'switch axis' button in the top left corner of the table to switch the position of the populations and measures on the axis.
Click and drag the label of a population or measure in the table head to a different position to rearrange the order of your columns and rows.
Calculate between percentiles and measurement values
Automated statistical calculations can be performed on the available data
Clicking on a mean and standard deviation in the table will switch to the 'single measurement' tab on which calculations between percentile and measurement values can be performed.
On the 'single measurement' tab automated calculations between percentile and measurement value can be performed. Enter a percentile or measurement value in the the input boxes (1 and 2) or set a z-value by adjusting the slider in the normal deviation graph (3). When multiple populations and or measures are selected you can select different combinations by using the drop down menus (4).
Calculations for multiple populations, measures, percentiles and measurement values
On the third and fourth tab calculations can be performed for multiple selected combinations at once.
On the set 'percentile tab' click on the input field and set a percentile by dragging the slider or entering a number (1). For all rows in the table the corresponding measurement values will be calculated (2).
On the 'set measurement' tab click on the input field and set a measurement value by dragging the slider or entering a number (1). For all rows in the table the corresponding percentile values will be calculated (2).
Combining populations and measures for automated calculations
In the categories 'combined populations' and 'combined measures' populations/measures can be added to a group. The new populations/measures can then be used in the same way as the populations and measures that are standard available in the database. The mean and standard deviation of these populations/measures will be calculated by using the formulas that are suggested under Basic calculations with data. For reliability the number of measures that can be added to a combined measure is limited to two. Take into account that combining multiple populations/measures will decrease the reliability of the information.
When a combined population is opened by clicking on its title, the populations that are selected in the selection panel (1) will be added to the group (2) instead of directly to the table. Populations can be removed from a combined population by clicking the delete button (3) or by deselecting them in the selection panel.(1). Click the close button (4) to close the combined population and return to normal selection.
When no mixed population is available for a dataset the quick link in the 'm+f' column (1) can be used to create a new combined population with the specific female and male population. The population will be aded to the category 'combined populations' (2) and to the table (3).
When a combined measure is opened by clicking on its title, the measures that are selected in the selection panel (1) will be added to the group (2) instead of directly to the table. A combined measure and population can be renamed by typing in the title text field (2). Click the +/- button (3) to change between adding and subtracting the measures. In the correlation field (4) a custom correlation value can be entered.
Look up background information about studies and measures
On varying places the system gives background information on the available data.
Click on the 'more' link in the population selection tab (1) to see background information about the specific study (2). In the same way clicking on the name of a measure in the image view or on the label in the table view will show a short description. Clicking on a population under 'Select population and available data' will select the gender groups of that population and all for that study available measures.