Data quality is monitored using routine indicators, computer validation and ad hoc studies of data accuracy and completeness of ascertainment.
Data quality is monitored using routine indicators, computer validation, ad hoc studies of data accuracy and completeness of ascertainment, and through data exchange with specialist registries.
In this sense, the information provided by Health Surveys should be supplemented with ad hoc studies of diseases with important health and social impact but lower rates of incidence and prevalence.
This figure is higher than that reported by similar ad hoc studies for the same type of RTIs [ 16].
However, ad hoc studies to establish clinical efficacy of DPP4-I in elderly T2DM patients have been only recently performed.
Here, we use a framework put forth by an ad hoc study group of industry and government scientists and academics to critique the risk characterizations contained in two risks assessments of gasoline vapor.
Operation of ad hoc study clinic visits by group may have reduced the variability on the diagnosis by different physicians, the drop-out rate, and the time to complete the entire trial, but variations inherent in menstruation are unavoidable, which require greater manpower to closely follow up the women in order to meet the clinic schedules.
Full evaluation of this issue will require a further ad hoc study.
Furthermore, the possibility that the implementation of occupational preventive programs focused on workers with high CA frequency might have modified their risk of cancer is a plausible explanation of these results, and it will be further evaluated with ad hoc studies, reconstructing occupational lives of subjects with the highest frequency of CA at their first cytogenetic analysis.
Actually, there is a lack of ad hoc studies in patients with hepatosplenic sarcoidosis, and most evidence derives from description of single case reports or from findings of small case series [ 10].
