Table 2 Meta-data extracted from CEE systematic reviews and maps published between May 2012 and May 2019

review_title

Title of the review (with hyperlink)

Citation

journal_name year volume:article number

pubilcation_date

Date of publication according to EEJ

review_type

Systematic review or systematic map

database_provided

Was a database of studies and descriptive information provided as an additional file? 1 = yes, 0 = no

file_format

The format of the database file

data_as_rows_variables_as_columns

Is the data organised such that independent data points (e.g. studies) are rows and variables are columns? 1 = yes, 0 = no

multiple_values_per_cell

Are there any occurrences where cells contain more than one value? 1 = yes, 0 = no

potential_linking_issue

Are there any occurrences where cells contain more than one value across multiple variables? 1 = yes, 0 = no

format_condensed

Is the database arranged in a condensed format? See manuscript for full description? 1 = yes, 0 = no

format_wide

Is the database arranged in a wide format? See manuscript for full description? 1 = yes, 0 = no

format_long

Is the database arranged in a long format? See manuscript for full description? 1 = yes, 0 = no

format_wideandlong

Is the database arranged in a wide-and-long format? See manuscript for full description? 1 = yes, 0 = no

format_multiple

Are multiple database formats provided? 1 = yes, 0 = no

value_separator

Data separator used to indicate break between multiple values in a cell

multiple_separators_per_table

Are different separators used within the same data table? 1 = yes, 0 = no

multiple_separators_per_cell

Are different separators used within the same column? 1 = yes, 0 = no

Notes

Further comments on data formatting

database_link

The URL for the main database file