Appendix 4: Example Data Extraction Form

Abstract

Example data extraction/critical appraisal form, used in this case to guide data extraction of studies in a systematic review of the health and social impacts of new road building. 1 Data to be extracted Notes to reviewer Title of study Author Year of publication Study of new road? If ''no''-exclude. Setting Town/region and country of intervention Time Time when study took place (rather than date of publication) Study objective clearly stated? Study objective as stated by authors Study methodology (or methodologies) used Inclusion of sufficient data to assess validity of conclusions? Including statistical tables; in the case of qualitative studies, it can mean including direct quotes from respondents, rather than relying only on reported speech and interpretations. Data source (e.g. police accident statistics, survey of residents, etc.) Size of achieved sample Also include size of total population if stated (Continued)