Improving Quality of Environmental and Social Impact Assessment Reports: A Statistical Analysis

Improving Quality of Environmental and Social Impact Assessment Reports: A Statistical Analysis

Philip Manyi Omenge Gilbert Onacha Obwoyere George Were Eshiamwata Stanley Maingi Makindi Jathin Nathwani

Faculty of Environment & Resources Development, Department of Natural Resources, Egerton University, Kenya

Kenya National Commission for UNESCO, Kenya

School of Environment & Natural Resources Management, Department of Environmental Sciences, Machakos University, Kenya

Waterloo Institute for Sustainable Energy, University of Waterloo, Canada

Available online: 
| Citation



Environmental and Social Impact Statement (ESIS) for a proposed development is vital in guiding decision makers arrive at an informed decision. Many studies have analysed ESIS quality using qualitative methods with limited statistical analysis. In this paper, we present findings of a statistical analysis of qualitative data of ESIS using Somers’ delta test (Somers’d). we report on how public participation and analysis of alternatives influence the quality of ESIS. Results show that there is a strong and positive correlation between the quality of ESIS and public participation and also between the quality of ESIS and the analysis of alternatives, which is statistically significant, < 0.0005, Somers’ = 0.676 and <0.0005, Somers’ = 0.682, respectively.


alternatives analysis, environmental and social impact statements, public participation, Somers’ delta test


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