FAQ

Below are Frequently Asked Questions about the EUREG web site as a guide to using the various functions available.

Further questions may be added to this page as appropriate. Any question that is not answered below should be e-mailed to eco@iarc.fr.

What is the advice screen for?

The Analysis->Advice screen allows you to browse images of charts and tables to help you choose the most relevant output. To scroll through the different images, use the arrows to the left and right of the image or use the buttons underneath the image. Click on the image of interest to start producing it.

To view the available tables, click the 'Switch to tables' button in the left menu.

How do I make a table?

To make a table, navigate to the Analysis->Tables screen from the main menu bar at the top of the page. After you choose the relevant type of table, the screen with applicable parameters will appear. Make sure to fill in all of the parameters and then click the 'Get table' button. The table will load in a new tab.

How do I make a chart?

To make a chart, navigate to the Analysis->Charts screen from the main menu bar at the top of the page or through the Advice->Charts. The available chart types can be selected from the coloured menu bar across the page. Selecting a chart will lead to the display of a screen with appropriate fields, which should be completed. Some charts listed on the menu bar can lead to several related chart types. Entering search parameters for Age-specific curves and Time trends is a three-step process. Use the 'Previous step' and 'Next step' buttons to navigate between these steps. The parameters for the other types of charts are defined on a single page. Once all options have been set, click the 'Get chart' button to load your chart in a new tab.

screenshot sorting Fig. 1: Sorting a table using the arrow icons

How do I sort a table?

All tables will have a set of arrows next to the important column headers. Clicking these arrows will dynamically sort the table. Click again to sort the table in the other direction.

How can I customise tables?

Tables can be customised after they have been loaded. The customisation menu appears to the left of the table. Select the desired changes and click the 'Update' button. The new table will load in the same tab after a few moments. When you export a table, the most recently customised version will automatically be exported.

How can I customise and resize charts?

Charts can be customised in a similar way to tables (see the previous FAQ about tables customisation). However, different options are available for charts compared with tables. For example, it is possible to adjust the size of the chart using the sliders. As with tables, clicking the 'Update' button will modify the chart and the most recent version will be exported. Please note that the updates you make will change the charts in all tabs.

It is possible to resize charts by dragging the right or bottom edges of the chart, in a similar manner to resizing a window. Simply click and drag the edges to resize bigger or smaller. When you resize a chart, all other charts on the page will dynamically resize also. When resizing a chart, a dotted box will appear in order to help estimate the new size of the chart.

screenshot resizing charts Fig. 2: Resizing by dragging the edges of the chart. Note the dotted border to help resizing. The bottom or right edges can be dragged.

Which table and chart items can be customised?


Customisable in tableCustomisable in chart
Font typeFont type
Font sizeFont size
ThemeTheme
Border typeLines
BoldLegend position
ItalicColours
UnderlineAnchors
GridlinesGridlines *
Labels *
Size (width and height)
Scale minimum *
Scale maximum *
Columns style *
Outline

* Only available in some charts

What should I consider when printing a chart in black and white?

When printing a chart in black and white, it can be difficult to read and interpret. EUREG can help in this regard. Use the 'Chart style' toolbox to the left of the generated chart and select the theme of 'grey scale' or 'printer friendly'. This may give better results when printing. Also, you can add labels to the chart points by setting the 'Labels' checkbox. Be warned that if there are many data points, the labels may overlap.

What are the different tabs for each generated chart?

Most charts can be displayed in several predefined ways. These are indicated on the chart tabs, including one for a batch export. Here is a summary of the different tabs for various chart types.

  • Age-specific curves, time trends (by age), time trends (all ages), survival
    • Arithmetic scale
    • Semi-logarithmic scale
    • Zoom chart
    • Batch export
  • Time trends (by cohort)
    • Cohort / Age
    • Period /Age
    • Age / Cohort
  • Survival
    • Full percentage scale
    • Zoom percentage scale
    • Batch export
  • Population pyramid
    • Pyramid view
    • Stacked area view
  • Chart data

Can a chart be displayed with a logarithmic scale?

Yes, a logarithmic scale is available for most charts. Use the 'Semi-logarithmic scale' tab of the chart to view it.

What are the interactive features of the charts?

First, it is possible to change the appearance of the chart (as discussed above). Second, if you hover over any data point on a line chart, you will see the corresponding name (of the data point) and value. Third, clicking on the different items on the chart legend will allow you to make the selected series visible or invisible.

screenshot interactive charts Fig. 3: Using the interactive features of a chart to remove a line; hovering over a data point displays plot details

Most charts also allow the 'Zoom chart' function, which is described in the next FAQ.

How do I 'Zoom' in on an area of a chart?

The 'Zoom chart' function is available in a dedicated tab for all charts except Time trends by cohort and Population pyramid. In 'Zoom chart' mode, it is possible to examine in detail a selected section of the plotted lines by enlarging the x-axis. To do this, select the 'Zoom chart' tab on the Chart results screen. Hovering over the chart makes the cursor change to a magnifying glass and display different data values. Click to select the starting point on the x-axis and drag until the end-point is reached; the end-point is determined when the mouse button is released. A scroll bar at the bottom of the chart allows you to move across the x-axis comprising all the original values. To zoom out, click the 'Zoom Out' button at the top right of the chart.

screenshot detailed charts Fig. 4: Zooming into a particular area of a chart

The 'Switch to Pin Mode' button on the control panel of the chart is useful for comparing different sections of the chart. After you click the 'Switch to Pin Mode' button and select a section of the chart, the selected area will be shown in a darker shade of grey than the rest of the chart and can be dragged across the chart. The reference section of the chart can then be compared with any other section of the chart in an overlay mode. To cancel the reference area, click the 'X' button at the top corner of the darker area.

Clicking the 'Reset Chart' button on the control panel will display the original chart as defined by the user.

What export options are available for tables?

Tables can be exported as PDF or Excel files. To export a table, use the drop-down list above it and select the desired export format.

What export options are available for charts?

Chart graphics may be exported as an image (.png/.jpg) or PDF file. To export a chart, right-click on the chart and then click 'Save as JPEG', 'Save as PNG' or 'Save as PDF' to export the corresponding file format. Alternatively, the buttons beneath the chart may be used.

All of the charts can be exported at the same time using the the 'Batch export' tab. This function is explained the next FAQ.

The underlying data are tabulated underneath the chart. These data can be exported as Excel or PDF files like the tables, using the drop-down list above the tabulated chart data. Please note that exporting a chart and batch exporting can take a few seconds. A progress bar will appear while the chart is exporting.

How do I use the batch export?

Batch export is used to export all of the charts (logarithmic, detailed, etc.) to the same document as a PDF or an image file. To batch export, click on the 'Batch export' tab on the Chart results screen. Then click the large 'Create export files' button to start the process. A loading message will appear, and after a few seconds the list of files will appear. In the control panel at the bottom of the interface, the output format can be selected. Finally, click 'Save All' to confirm the export.

How does user log-in work in EUREG?

login Fig. 5: Logging in as a user

Any user can create a profile and use the EUREG log-in. This log-in provides access to some useful functions, such as making custom registry groups or saving your searches. TThe log-in screen is located to the right on most pages of the EUREG web site. To log in, a username and password must be created. To do this, click the 'Register now!' link located at the bottom of the log-in panel. You will need to enter the following details:

  • Username
  • Password
  • Email

After all information has been entered, click the 'Create User' button to confirm. The new account will be created, and the new user will be automatically logged in. The log-in is active when the user’s details and last log-in date are displayed on the log-in panel.

How do I create a registry group?

Registry groups are user-defined groups of registries/periods. They allow you to re-use previous definitions. To use the registry groups, the user has to log in. The three latest groups are then listed in the 'Recent registry groups' section on the right of the screen. To create a group, click the 'Create a new group' button in the same frame or go to User Menu->Registry Groups and click the 'Click here to create a new registry group...' link. A special interface will appear, similar to the screen shot below.

  1. Enter a label for the group (mandatory) and a description (optional). The label will be used to create or describe charts and tables.
  2. The list on the left contains available registries and years. This list may be filtered by country. You can select as many registries as you want from the list. Use Ctrl+click or Shift+click to select multiple registries. When ready, click the 'Add Registries >>' button.
  3. The selected registries will be added to the second list, on the right. This is the list of registries in the registry group. The slider of years below the list will adjust automatically based on the particular years covered by the registry added to the list.
  4. To remove a particular registry or registries from the customised group, click the '<< Remove Registries' button below the list. Again, you can select multiple registries to remove.
  5. Select your desired years by moving the slider to and fro. Please note that only years available to all registries in the list will be selectable.
  6. To confirm the new registry group, click the 'Save group' button.

screenshot registry group Fig. 6: The registry groups interface

A group will appear on the tree list in the 'Registry groups' section (this appears on the right sidebar of most pages). Click on a group in the tree to examine the corresponding registries and years.

How do I use registry groups?

screenshot registry group select Fig. 7: Selecting a registry group for rates by age

Customised registry groups may be used in all incidence and mortality tables and charts that take a registry as a parameter and in population pyramids. The 'Registry groups' function is not available in survival analysis. When defining a table or chart, the Registry group is placed below the Registry selector, in the 'Location' section. The list of user-defined populations will appear on the selection panel in the 'Registry group' drop-down list. Registry groups are used just like any other population defined by registry and calendar years.

How do I save a search?

Saving searches can save time. Any search of registries, years, cancers, etc. may be saved by logged-in users for use at another time. To save a search, click the 'Save this search' button on any of the table or chart selection panels after entering the relevant parameters. A dialog box will appear, in which a label for your search should be entered (mandatory). Also, a checkbox can be set if you would like to have a link to the saved search sent to your e-mail address. After you confirm a saved search, the label will appear in the 'saved searches' sidebar below the custom groups. At any time, you can click this label to load the desired search.

screenshot cancer group Fig. 8: The cancer groups interface

How do I make a cancer group?

Cancer groups combine different types of cancers to be treated as a single entity in charts and tables. They are created in an ad-hoc manner and are not saved. Log-in is not required to create a cancer group. To create a group, click the 'Cancer groups...' button next to the Cancer search field when creating a table or chart. A list will appear of all available cancer sites. Provide a label, select the cancers to include in the cancer group, and then click 'Confirm'. At least two cancers must be selected to create a cancer group.

When the window is closed, a line will appear under the Cancer field with the name of the cancer group. Click the '(X)' button beside the group to remove it, or go back into the cancer groups to modify it. The analysis can then be generated as usual. The customised label of the cancer group will appear in the table or chart instead of the list of the cancers included in the cancer group.

The creation of cancer groups is even simpler for Age-specific curves and Time trends. By default, multiple cancers for these charts can be selected. If they should be combined in a single group, select the 'Grouped cancers' radio button underneath the cancer field. A descriptor label will then be requested in the 'Grouped cancer label' field. The text you provide will be displayed in the graphs.

What are the cautions to be aware of when interpreting incidence data in EUREG?

  • Screening-related cancers: breast, colorectal, cervical and prostate cancers. Care should be taken when studying time trends. Screening programmes, whether organised or opportunistic, may affect the incidence rates.

Are there specific warnings to note for EUREG mortality data?

  • Data quality and completeness vary over time.
  • Introduction of new ICD revisions may make previous definitions of cancer site partially incompatible with the succeeding ones.
  • Regional differences and changes in certification of cause of death over time could affect the comparability of the data.
  • Topography “uterus unspecified” may include different proportion of cervix uteri and corpus uteri cases in different populations and time periods.

Are there specific warnings to note for EUREG survival data?

  • The age groups are pre-defined, and some age bands are not always available.
  • Period refers to the years when the cancers were diagnosed (incident), and they are pre-defined.

Why does a registry group sometimes return strange results?

This may happen with custom groups using mortality data. If mortality and incidence data submitted for one of the registries in the custom group do not match up, the mortality data may be biased because the period coverage by each registry is defined by the available incidence years. For the moment, mortality data in custom groups should be treated with caution. However, where the same calendar years are available for both incidence and mortality data, the results for the custom group are reliable.

Who do I contact with a question not answered above?

All technical questions should be directed to the ENCR secretariat.

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