The purpose of this Evidence and Gap Map (EGM) is to provide easy access to the available evidence on the effectiveness of interventions to improve the welfare of people with disabilities in low- and middle-income countries.
This EGM includes both systematic reviews and impact evaluations. The EGM is based on a systematic search for studies published between 2000 and March 2018. This map shows the coverage of 85 impact evaluations and 53 systematic reviews.
In the map the rows are intervention categories and the columns are indicator (outcome) domains. The framework for the EGM – interventions and outcomes – are based on the components of WHO’s Community Based Rehabilitation (CBR) matrix (WHO, 2010). Both interventions and outcomes use the same set of headings, that is: health, education, livelihood, social and empowerment. Interventions include a sixth category of advocacy and governance.
The cells of the table contain a bubble whose size is proportional to the number of studies reporting that outcome for that intervention. There are separate bubbles for primary studies and systematic reviews, with the reviews further divided by study quality as assessed using the AMSTAR-2 tool. Red color bubbles indicated ‘low quality’ systematic reviews, orange indicate ‘medium quality’ and green ‘high quality’ systematic reviews. Blue colored bubbles are indicative of Impact evaluations.
The map has three version Bubble, heat and donut which are self-explanatory. Clicking on a cell gives a list of studies corresponding to an intervention and outcomes for that cell. Click on a study in the list to get publication details, relevant summaries and URL to access the study itself.
The map includes a set of filters like systematic review quality, population, region, countries type of impairment, study design allowing evidence to be shown just for the selected filter. To use this, click the setting tab ‘Filters’ on the top-left of the map. The various categories (filters) can be scrolled down and checked for selection. Once all the relevant filters have been selected, click on ‘Update’.
This EGM also identifies key ‘gaps’, cells which do not have any bubbles, indicates there no evidence from impact evaluations or systematic reviews.
The report describing the map can be downloaded here.
This map was commissioned by the Department for International Development (DFID) and undertaken by the Campbell Collaboration and the International Centre for Evidence and Disability (ICED) under the auspices of the Centre for Excellence for Development Impact and Learning (CEDIL).
Read more about Campbell Evidence and Gap Maps.