Besides the above-mentioned potential measures to better address the migrant population, the selection of a separate migrant sample could be considered (e.g., as an add-on study).
To examine the efficacy of N-acetylcysteine (NAC) for the treatment of pediatric trichotillomania (TTM) in a double-blind, placebo-controlled, add-on study.
Slater SK, Nelson TD, Kabbouche MA, LeCates SL, Horn P, Segers A, et al. A randomized, double-blinded, placebo-controlled, crossover, add-on study of CoEnzyme Q10 in the prevention of pediatric and adolescent migraine.
Because no currently available treatment has proven benefit, and because all therapies are known to potentially cause harm, placebo-control is not only ethical but is in some ways preferable to active comparator or add-on study designs.
The study was conceived as an add-on study to the usual symptomatic medication (analgesics and/or NSAIDs).
Owing to short follow-up, data from this add-on study group will not be presented here.
This add-on study was designed to look at DDE and androgens in men (Martin et al. 2002).
Among the parents of chronically ill children in our study, the add-on study scenario received the highest grade of acceptance (49%; n = 21).
Finally, the BEGIN Victoza Add-On study 28 compared IDeg + IAsp versus IDeg + liraglutide in a T2DM population from the BEGIN Once Long extension cohort.
In this study the company invested in an add-on study of specific interest to service users from the public and patient involvement arm of NIHR MHRN.
Researchers who are not directly involved in the cohort studies we examined can generally apply for access to samples and data or to propose an add-on study.
