Reconstructing historical changes in the force of infection of dengue fever in Singapore: implications for surveillance and control
Joseph R Egger, Eng Eong Ooi, David W Kelly, Mark E Woolhouse, Clive R Davies, Paul G Coleman
Volume 86, Number 3, March 2008, 187-196
Table 3. Correlation coefficients describing trends since instigation of control in 1966 to 2002
| Model outcome | Correlation coefficient |
|
|---|---|---|
| year-on-year model | polynomial model | |
| Force of infectiona | –0.545 (P = 4.837 × 10–4) | –0.766 (P = 3.342 × 10–8) |
| Proportion of population susceptible | 0.825 (P = 3.332 × 10–10) | 0.879 (P = 8.031 × 10–18) |
| Average age of susceptible population | 0.991 (P = 3.692 × 10–32) | 0.994 (P = 1.096 × 10–35) |
a Per capita rate at which susceptible individuals acquire infection.