Learning by design: lessons from a baseline study in the NAMWASH Small Towns Programme, Mozambique

Dani Jennifer Barrington; Ryan Admiraal

doi:10.3362/1756-3488.2014.003

Learning by design: lessons from a baseline study in the NAMWASH Small Towns Programme, Mozambique

Dani Jennifer Barrington | Ryan Admiraal

This paper examines the design and application of a baseline study for a comprehensive water, sanitation, and hygiene (WASH) intervention in Mozambique. The study was developed to investigate the relationships among key parameters of interest both for comparison to post-implementation data and to contribute to planning the WASH intervention itself. We use this study to discuss key issues surrounding baseline studies. This includes providing guidelines for designing a WASH baseline survey, determining an appropriate sample size, and highlighting key considerations in analysing the survey data, such as incorporating the study design in statistical analyses, post-stratifying, and utilizing geospatial data. We also show how statistical analyses from a baseline survey can be used to inform subsequent surveys. For example, results from this study suggest that in future WASH studies, self-reporting by households should be supplemented by observational or population data to remove or quantify reporting bias, and care must be taken to reduce respondent fatigue.

Alexander, K.A., Carzolio, M., Goodin, D. and Vance, E. (2013) ‘Climate change is likely to worsen the public health threat of diarrheal disease in Botswana’, International Journal of Environmental Research and Public Health 10: 1202-30 <http://dx.doi.org/10.3390/ijerph10041202≯.

Arnold, B., Arana, B., Mausezahl, D., Hubbard, A. and Colford, J.M. (2009) ‘Evaluation of a pre-existing, 3-year household water treatment and handwashing intervention in rural Guatemala’, International Journal of Epidemiology 38: 1651-61 <http://dx.doi.org/10.1093/ije/dyp241≯.

Aziz, K.M.A., Hoque, B.A., Hasan, K.Z., Patwary, M.Y., Huttly, S.R.A., Rahaman, M.M. and Feachem, R.G. (1990) ‘Reduction in diarrheal diseases in children in rural Bangladesh by environmental and behavioural-modifications’, Transactions of the Royal Society of Tropical Medicine and Hygiene 84: 433-38 <http://dx.doi.org/10.1016/0035-9203(90)90353-g≯.

Bennett, S., Woods, T., Liyanage, W.M. and Smith, D.L. (1991) ‘A simplified general method for cluster-sample surveys of health in developing countries’, World Health Statistics Quarterly 44: 98-106.

Blum, D. and Feachem, R.G. (1983) ‘Measuring the impact of water-supply and sanitation investments on diarrheal diseases: Problems of methodology’, International Journal of Epidemiology 12: 357-65 <http://dx.doi.org/10.1093/ije/12.3.357≯.

Cairncross, S. and Valdmanis, V. (2006) ‘Water supply, sanitation, and hygiene promotion’, in D.T. Jamison, J.G. Breman, A.R. Measham, G. Alleyne, M. Claeson, D.B. Evans, P. Jha, A. Mills and P. Musgrove (eds.), Disease Control Priorities in Developing Countries, Washington, DC: World Bank.

Cressie, N. (1993) Statistics for Spatial Data, New York: Wiley.

Gakidou, E., Oza, S., Fuertes, C.V., Li, A.Y., Lee, D.K., Sousa, A., Hogan, M.C., Hoorn, S.V. and Ezzati, M. (2007) ‘Improving child survival through environmental and nutritional interventions: the importance of targeting interventions toward the poor’, Journal of the American Medical Association 298: 1876-87 <http://dx.doi.org/10.1001/jama.298.16.1876≯.

Handcock, M.S., Rendall, M.S. and Cheadle, J.E. (2005) ‘Improved regression estimation of a multivariate relationship with population data on the bivariate relationship’, Sociological Methodology 35: 291-334 <http://dx.doi.org/10.1111/j.0081-1750.2006.00170.x≯.

Horvitz, D.G. and Thompson, D.J. (1952) ‘A generalization of sampling without replacement from a finite universe’, Journal of the American Statistical Association 47: 663-85 <http://dx.doi.org/10.1080/01621459.1952.10483446≯.

Huber, A.C. and Mosler, H.J. (2013) ‘Determining behavioral factors for interventions to increase safe water consumption: a cross-sectional field study in rural Ethiopia’, International Journal of Environmental Health Research 23: 96-107 <http://dx.doi.org/10.1080/09603123.2012.699032≯.

Lee, E., Hu, M.Y. and Toh, R.S. (2004) ‘Respondent non-cooperation in surveys and diaries: an analysis of item non-response and panel attrition’, International Journal of Market Research 46: 311-26.

Lohr, S.L. (1999) Sampling: Design and Analysis, Pacific Grove, CA: Duxbury Press.

Lumley, T. (2010) Complex Surveys: A Guide to Analysis Using R, Hoboken, NJ: Wiley.

National Statistics Institute of Mozambique (2009) Final Report of the Multiple Indicator Cluster Survey, Maputo, Mozambique: National Statistics Institute.

Perez, E., Pyne, H.H., Amelink, C., Briceno, B., Coombes, Y., Devine, J., Peschiera, R.F., Frischmuth, C., Grossman, A., Koita, S.N., Kullmann, C., Nguyen, M.T., Nguyen, N.K., Orsola-Vidal, A., Paynter, N. and Watkins, K. (2011) Global Scaling Up Handwashing Project: Progress Report, Water and Sanitation Program: Progress Report, Washington, DC: Water and Sanitation Program.

Snow, J. (1855) On the Mode of Communication of Cholera, London: John Churchill. United Nations (2013) Goal 7: Ensure Environmental Sustainability [online], UN Publications, <www.un.org/millenniumgoals/environ.shtml≯ [accessed 28 July 2013]. www.un.org/millenniumgoals/environ.shtml

WHO and UNICEF (2012) Rapid Assessment of Drinking-water Quality: A Handbook for Implementation, Geneva: World Health Organization.