Table 1 The GM (1,1) model of each STD
From: Impact of COVID-19 pandemic on the epidemiology of STDs in China: based on the GM (1,1) model
a | b | b/a | GM (1,1) model | |
|---|---|---|---|---|
HIV infection | − 0.077 | 2.998 | − 39.026 | \({\widehat{x}}^{(0)}(k+1)=3.117{e}^{0.077k}\) |
Syphilis | − 0.037 | 28.922 | − 785.691 | \({\widehat{x}}^{(0)}(k+1)=29.482{e}^{0.037k}\) |
Gonorrhea | − 0.090 | 6.050 | − 67.028 | \({\widehat{x}}^{(0)}(k+1)=6.420{e}^{0.090k}\) |