An effort was made to discuss a possible relationship between the time variations in GPS-derived PWV and the rainfall events.
At the same time, variations in results between different empirical models suggest that this relationship is complex, affected by other factors that occurred during the study period, and warrants further investigation to verify our findings.
If imaged after this time, variations in the delay between tracer injection and imaging will minimally affect tumour tracer uptake.
Our study analysed years 4 7 of the scheme, by which time variation in performance between practices was much less than in the first year.
Furthermore, they also find significant time variation in the relationship between Swiss franc returns and the risk factors, with this link becoming stronger in times of stress.
This sample was sufficient to answer global questions about rhs diversity, (i.e., concerned with very long periods of time): variation in gene repertoire between and within genera, and the relative contribution of differential gene loss and lateral transfer to the evolution of rhs repertoire.
Another strength of the study was the bilateral setup where patients acted as their own controls, eliminating the bias introduced by inter-individual differences between patients, by different surgeons, different surgery times, variations in procedures, etc.
For example, a survey of ginseng products found up to 200 times variation in content between different products.
Other recent papers are also faced with this CPI data limitation (Fernandez-Huertas Mortaga, 2013) and appear to focus on quarterly time-variation in prices between 2000 and 2004.
However, previous studies [ 17, 18] indicate that the minor time variations between samplings and infusions in our study did not introduce any bias.
