We find evidence of a decrease in medical effort (variable e zi in the model) associated with the increase in the QOF price introduced in 2005.
In the impedance analogy the effort variable is force and the flow variable is velocity.
This working will be represented by a non-negative and ordinal variable c(t) –called the effort variable– assumed piecewise continuous (see Appendix S1 about this).
The rational nature of the effort variable c(t) allows one to interpret it as a control variable in the scenario of optimal control theory [29].
18 The test has been validated by Kline et al. 19 To calculate the effort variable, it is necessary to note the age (years), height (centimeters), weight (kilograms), maximum heart rate (HR; beats per minute, measured at the end of the test), and total test time.
The second, Increase Effort Index, is the sum of the four aforementioned increase effort variables.
However, such uses of technical performance trends require further consideration of the relationships among possible independent variables — in particular between time and possible effort variables such as cumulative production, R&D spending, and patent production.
His neuropsychological evaluation was interpreted with caution due to failed effort measures and variable effort throughout.
An evaluation of the beta coefficients indicated that the effort expectancy variable had a more prominent effect on the sample in Turkey.
Outbreaks of smallpox around the time of the global eradication effort exhibited variable case fatality rates (CFRs), likely attributable in part to complex viral genetic determinants of smallpox virulence.
Because face, body shape, and voice features were all represented by continuous variables, efforts were made to generate continuous variables using the binary variables that were obtained with the questionnaire so as to apply the same analytic method used for the other features.
