And even within one single symptom or factor, operationalization differs between studies.
The differences in operationalization and methodology hinders between-program comparisons of implementation parameters, limiting our understanding of what aspects of a program's content and context contribute to its potential to achieve a high degree of implementation.
However, as participation had been previously demonstrated to go beyond activity level [ 30], our results highlight the importance of differentiating better between the operationalization of activity and participation as proposed by the ICF.
Despite much effort to reduce the incompatibilities between the two classification systems [ 4], differences with respect to specific operationalization of many diagnoses still exist between the current versions, the ICD-10[ 1], last revision in 1993, and the DSM-IV-TR[ 2], last revision in 2000.
However, a recent review identified no studies of work‐related psychosocial stress and asthma exacerbations 8. To address this gap in the knowledge, we investigated the associations between job strain, an operationalization of work‐related psychosocial stress, and severe asthma exacerbations, defined as hospitalizations or deaths, in 100 000 European men and women.
Using the index operationalization that scales each index to values between 0 and 1, thereby adjusting for the different number of deficits included in the two indices and allowing direct comparison between the two datasets, the strength of association was similar in the CSHA and NPHS.
Additionally, we found no effects (direct or indirect) between help-seeking behavior and our operationalization of mindset, even though seeking help from others is taken to be evidence of a resilient mindset (Yeager and Dweck 2012).
When it comes to the operationalization of indicators, there is a wide range between indistinctly defined indicators and fully quantified indicators, a fact that is frequently left unaddressed in the research literature.
These important variations in the operationalization of frailty measurement render comparisons of findings between studies as problematic.
This also holds true for the operationalization of other components of the model, and relation between concepts.
