You can't precisely determine the results in advance: whether certain measures are combined for the best resulted, or whether certain activities are accepted, which effect they’ll have and how long-lasting their success is. This is why it's important to check the structure, the quality of the processes and the results from the beginning on.
Degree of Effectiveness and Efficiency
When looking at the results it's important to consider the degree of effectiveness: How many participants and which target groups did the measures reach? What was changed? How did the measures affect productivity and health? How much did the measures cost? A systematic evaluation often shows that obvious, standard interventions often cost more than they're worth, while less obvious changes can bring about big results.