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Reporting an evaluation

The scale and extent of a report should be proportionate to the scale and importance of the intervention and associated evaluation.

It can be useful to present the findings using the logic model and evaluation questions to help explain how and why an intervention led to the reported outcomes and impacts. 

Acknowledge and report the limits of the evaluation, uncertainties and unknowns.

Be objective in describing the magnitude of impact.

Scale of reporting

Guidance on the scale and extent of a report includes:

Reporting level of confidence in the results

Some qualitative guidelines on the reported level of confidence in the impact assessment are given in here.

A statistical test may have been completed to determine whether a change in the number of incidents is “significant”. Care must be taken in using the term ‘significant’ when presenting results. A statistically significant change in the number of incidents is an expression used in statistics that means that the impact is unlikely to be due to chance. It does not necessarily mean that the change in the number of incidents is large. A small change can be statistically “significant”.  The size of impact may be described using the words given in Table 5. For example:

  • A statistical test indicated that there is a high (95%, p<0.05) level of confidence that a moderate reduction (of 30%) in the number of incidents was not due to chance.

Advice should be sought from a statistician or analyst regarding what statistical test to apply. 

Describing impacts

Some good reporting practices are shown here for describing impacts. These examples may be a sufficient level of reporting for describing results of low or medium value evaluation. The good practice examples each include:

  • Definition of the location(s);
  • Before and after number of incidents;
  • A brief statement of the type and quantity of intervention;
  • Statement of the before and after periods;
  • Comment on uncertainties, potential displacement/substitution and unknowns.
Haven’t found what you’re looking for?
Get in touch with our Senior Safety Intelligence Analyst for further information.
Siona Vass
Tel: 020 3142 5485
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