There are some indications already that California wants to split off and such pressures tend to build over time.
We believe these issues are largely irrelevant provided one has a goal of determining success of infection control within an institution, if the sampling indications remain similar over time, which is an assumption behind much passive infectious disease surveillance.
To give some indication of variation over time a direct comparison was made to McLeod's (1999) study based on the 1990 1994 cancer registration data (Table 4-wrap>).
The differences in physical health between acute indication and elective indication were not stable over time (P=0.01).
Only one study offered indications that improving SES over time seems protective against diabetes and that a decrease in SES is especially harmful [ 41].
After pooling the data, there were indications of a decrease over time following hospitalization, but more prevalent hazardous use than in the general population.
There are also indications of skill decay over time, however, with several studies demonstrating that all short-term improvements in knowledge, skills and practices were not maintained over longer time periods.
Data from Rochester Minnesotaa, USA) demonstrate that although the incidence rate fell progressively over the four decades of study – from 61.2/100,000 in 1955 to 1964, to 32.7/100,000 in 1985 to 1994 – there were indications of cyclical trends over time [ 9].
Although the vaccinated rhesus macaques all showed signs of ongoing systemic infection for weeks or months after challenge, protected monkeys lost all indications of SIV infection over time, consistent with immune-mediated clearance of an established lentivirus infection.
In contrast, HbA1c provides a very good indication of glycemic control over time.
