Table 2 Fitted parameters, calculated Akaike’s Information Criterion (AIC) and Sum of Squared Residuals (SSR) for model fits to median data for each model.

From: Modeling the Effects of Morphine-Altered Virus Specific Antibody Responses on HIV/SIV Dynamics

Model Fitted parameters Rapid-progressor morphine group Slow-progressor morphine group Control group
SSR AIC SSR AIC SSR AIC
Model – 1 (Basic model) η, γ, σ, λ, r, q 8.30 125.3 3.37 7.6 2.65 9.4
Model – 2 (γ = 0) η, δ, σ, λ, r, q 6.17 122.6 3.13 6.5 2.38 7.9
Model – 3 (η = 0) βl, γ, σ, λ, r, q 8.28 125.3 3.36 7.6 4.02 15.2
Model – 4 (σ = 0) η, γ, c, λ, r, q 7.46 124.3 3.27 7.1 2.87 10.3
Model – 5 (γ = η = 0) βl, δ, σ, λ, r, q 8.37 125.3 3.19 7.0 2.42 8.2
Model – 6 (γ = σ = 0) η, δ, c, λ, r, q 8.08 125.0 3.38 7.7 2.45 8.3
Model – 7 (σ = η = 0) βl, γ, c, λ, r, q 8.18 125.1 3.26 7.1 2.78 10.1
Model – 8 (σ = η = γ = 0) βl, δ, c, λ, r, q 8.09 125.0 3.69 9.0 5.21 18.8