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58 health survey is an example of a document you can use as baseline information. Previous reports from other organisations working in similar areas of concern can also be used as basis for comparisons. Although this option is cheap, it is often difficult to use because of passage of time from the time information was documented to the time of use. In addition, some organisations tends to use weak methodologies when collecting data which questions the quality of their data. 3. Rolling baseline Profile – this is based on a profile of data collection, showing a trend of a pattern of a phenomenon, especially in large contextually-difficult surveys that challenge ordinary implementation of baseline studies. IFAD (2002) defines a rolling baseline profiles as a baseline involving collecting information to develop profiles not once but on a rolling basis. The last point of data collection becomes the base for comparison. Table 1: Comparisons of the Option for Conducting Baselines Type of comparison Basis for comparison Advantages Disadvantages Required evaluations design Before and after intervention Change over time in a project in comparison to baseline Easy to conduct and relatively inexpensive Indicate traceable change Difficult to control confounding variable and explaining factors influencing change Longitudinal With and without project intervention Traces changes between two similar geographical location- with and without intervention Changes are easier to be linked to intervention Similar geographical location may be difficult to find Ethical setback of empowering one location over the other Quasi- experimental Intervention vs. control group Helps trace change between the intervention and control group Easier to explain and see changes Expensive, pose ethical setbacks and requires advanced methodological and statistical skills that not Randomised control trail