Combination factor


Which study results are included in the calculation of the job effect?

Not all study results should be included in the calculation of a job effect, and especially not to the same extent. Therefore, a combination factor has been incorporated, which takes the relevance of the study results into account in the calculation of the job effect. Thus, the weighting depends on the search conducted on Jobeffekter.dk, and may have the following values:

Combination factor

Weights

No combination factor 

1

Combination factor in either target group or intervention 

0.5

Combination factor in both target group and intervention 

0.25

The combination factor is relevant for results concerning several target groups or combinations of several interventions. For example, if the effect of interviews has been investigated in combination with ordinary education, the full estimated effect should not be ascribed solely to interviews. Similarly, if the effect on both insured unemployed individuals and non-insured unemployed individuals has been investigated, the full estimated effect cannot be ascribed solely to insured unemployed individuals. Results concerning combinations of interventions or target groups are thus weighted by 0.5, when the overall conclusion (the job effect) is calculated for one of the target groups or one of the interventions.

The combination factor is also relevant for results concerning sub-categories of target groups or interventions. For example, if the effect of on-the-job training, which is a sub-category of business-oriented interventions, has been investigated, the full estimated effect cannot be extended to business-oriented interventions. Similarly, if the effect on sick-listed individuals with mild mental illness has been investigated, the full estimated effect cannot be extended to all sick-listed individuals. Results concerning sub-categories of a given target group or intervention is thus weighted by 0.5, when calculating the overall conclusion (the job effect) for the overall target group or intervention.

Results concerning combinations of both interventions and target groups are thus weighted by 0.25, when the overall conclusion (the job effect) is calculated for one of the target groups or one of the interventions.