Cohorts differed by several characteristics, reflecting recruitment differences.
However although more than a quarter of the oldest participants in the ALSWH died in the 12 years following recruitment, differences from the national population changed only slightly.
In particular more patients from Eastern Europe were categorized into Category A. However, this might reflect recruitment differences of patients by studies and is considered as not clinically relevant.
Baseline clinical data in the two groups were similar and, if the difference in compliance had represented a systematic difference in recruitment, differences in the results would have been expected.
54 55 Additionally, we will look at the post-recruitment-pre-recruitment difference in the number of SA days during the 12-month periods using difference in differences analysis (figure 2).
As a result of these different recruitment procedures, differences between populations regarding the level of quality of life may have occurred.
Looking at the person undertaking the recruitment, the difference between a nurse and a doctor was not statistically significant.
This paper examines the potential impact of recruitment source differences in schizophrenia research by comparing the neuropsychological performance of volunteers from the NISAD Schizophrenia Research Register with recently published schizophrenia normative data for the Repeatable Battery for Neuropsychological Status (RBANS).
While this, and the potential influence of acoustical properties, would have to be corroborated by further research, the present results show that TPJ recruitment by differences in authenticity is spontaneous, while the mPFC and retrosplenial cortex were not affected, due to the lack of explicit authenticity recognition, as in Drolet et al. (2011).
Results are not, however, directly comparable due to differences in the recruitment setting and differences in the questions pertaining to knowledge of risks associated with testing.
Nicholas Fryer: difference recruitment strategies work for different audiences: I suppose it's about identifying the best way of reaching young people, explaining the role and enthusing them.
