﻿This file describes tables and the data extracted from the literature used in the extended abstract titled "How do Non-profit Open data Intermediaries enhance Open data Usability? A Systematic Literature Review" published in The 18th International Symposium on Open Collaboration (Companion), September 6–10, 2022, Madrid, Spain. The tables were produced during and after the data extraction needed to address the research objective.


1. Table 1 – NPO descriptions.pdf
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The table contains descriptive information about the non-profit organisations (NPO) described in the fourteen papers selected for the systematic literature review.

Field				Description
-----				-----------
Non-profit organisation (NPO)	The name of the organisation
Type of project/mission		The aims and goals of the organisation
Initiative in focus 		Specific initiative the source(s) is focused on
Activities performed 		Activities that the organisation performs
Source(s)			The source(s) of the data


2. Table 2 – Research focus and methods.pdf
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This table provides information about the research focus and methods of each fourteen papers selected for the systematic literature review.

Field				Description
-----				-----------
Research focus			What the research focuses on/investigates
Methods				Description of the methods used in the research
Source				The source of the data


3. Table 3 – Intermediary roles, their respective activities, and affected usability barriers.pdf
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This table is the full version of Table 1 described in more detail in the published extended abstract. It describes the roles of the intermediaries, activities that are linked with said roles, and usability barriers affected by these activities. It also provides examples of the activities performed by the NPOs related to each role, which are described in the selected literature.

Field				Description
-----				-----------
Intermediary role		The name of the role
Proposed activities		Activities performed by an intermediary with a specific role
Affected usability barriers	Usability barriers that can be reduced by the activities 
Examples of NPOs’ activities	Examples of activities performed by NPOs in the source(s)
Source(s)			Papers in which the examples of NPOs activities are found

