数学中国 Ww. madio. net 146 The LIMAP Joumal 29.2(2008) other components. Interestingly, although the U.S. and Sweden have dif ferent values for their prevention meta-metrics, they respond essentially identically to changes in prevention 11·“151“1画 1·、⊥“5· 344,550607D/8 +,t/:, Figure 2 Variations in meta-metrics by nation. In each case, the remaining two meta-metries are held constant at the values given in Table 1. Current values are depicted as dots. Sweden is represented by a dashed line, the U.S. by a bold Ine, and Nigeria a thin line. Although their prevention meta-metric differ, the US and Sweden effectively share the same prevention curve. By considering the impact of economic status on accessibility and treat- ment, we can gain even more insight. Figure 3 shows how retention reacts to changes in meta-metrics by economic class: The economic levels in the U.S. react very differently to changes in meta-metrics. This result agrees with out hypothesis that a persons economic status plays a large role in determining the quality of healthcare that the individual receives. 国,j 344.5506070f非 9,;/;,,f Figure 3. Variations in meta-metries by U.S. meta-metrics are held constant at the values gi cval nic dass. In each case, the remaining two Table 2: for P, we use the value given in for the U.S. in Table 1. Adiusted meta-metric are depicted as dots. The middle dass is represented by a dashed line, the lower dass by bold line, and the upper dass by a thin line Strengths Our model exhibits the following positive characteristics xtendability. Our model is a very comprehensive assessment e In- teraction of the healthcare system with the population. The advantage of using a stochastic process in creating this interaction is that we can always extend it to be more complex. For example, if we gained access to reliable data for readmission for failed treatments, we could add this pathway into our model and obtain an even more accurate simulation of the healthcare process数学中国ww.madio.net