This type of questionnaire is important to include in a study of this nature, as it identifies concepts that are important in weight interventions, especially when evaluating the family's confidence in achieving a particular goal or changing a behavior.
It is the preferred perspective of the German HTA-body IQWiG when evaluating interventions.
Often, when evaluating interventions the wider impacts such as familial benefits are unexplored by researchers.
Although efficacy and effectiveness studies are both important when evaluating interventions, they serve distinct purposes and have different study designs.
Although both types of studies are important when evaluating interventions, they serve different purposes and provide different data.
Thus, when planning interventions (group or individual); when evaluating rehabilitation programs, or comparing patient achievements in individual items, cross-diagnostic DIF must be taken into account.
More generally, the tendency for smaller studies to show a greater effect than larger studies, when evaluating interventions, has been named small-study effects [ 4].
As in all quantitative research, the use of valid and/or appropriate mathematical models is key when evaluating interventions in a generic way and for long-term [ 36].
Given the high disability and poor quality of life associated with OA, patient-perceived outcomes are considered important when evaluating interventions.
Such time effects can also include seasonal variations and disease progression: the latter may be particularly relevant when evaluating interventions targeting treatments for HIV.
