Table 2 Coefficients of the regression model and errors fitted to an ARMA structure
From: Syndromic surveillance for West Nile virus using raptors in rehabilitation
Coefficients of the model before 2002 | Period January 1990–December 2001 | Coefficients of the model after 2002 | Period January 2002–December 2014 | ||||||
|---|---|---|---|---|---|---|---|---|---|
Value Std | Error | t-value | p-value | Value Std | Error | t-value | p-value | ||
Intercept | 4.04 | 0.83 | 4.87 | 0.00 | Intercept | 21.50 | 3.80 | 5.66 | 0.00 |
δ | 0.08 | 0.01 | 7.66 | 0.00 | δ′ | −0.004 | 0.02 | −0.22 | 0.83 |
β 12 | −5.79 | 0.57 | −10.10 | 0.00 | β 12 ′ | −16.60 | 1.05 | −15.85 | 0.00 |
α 12 | −3.20 | 0.57 | −5.60 | 0.00 | α 12 ′ | −12.96 | 1.04 | −12.42 | 0.00 |
β 6 | −0.36 | 0.54 | −0.68 | 0.50 | β 6 ′ | 8.55 | 0.98 | 8.69 | 0.00 |
α 6 | −2.89 | 0.54 | −5.36 | 0.00 | α 6 ′ | −4.96 | 0.98 | −5.05 | 0.00 |
α 4 | 1.08 | 0.49 | 2.21 | 0.03 | α 4 ′ | 6.90 | 0.89 | 7.72 | 0.03 |
α 3 | −1.58 | 0.44 | −3.62 | 0.00 | α 3 ′ | −4.53 | 0.80 | −5.69 | 0.00 |
ϵt | Zt + 0.221Zt − 1 | ||||||||
AIC: 1913.46 BIC: 1983.83 logLik −937.73 | |||||||||
Standardized residuals: Min: −3.47 Q1: −0.61 Med: −0.12 Q3: 0.47 Max: 4.60 | |||||||||