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| Archimedean Copula Models | AIC | Final llk | τ |
| Clayton | 3021.02 | -1501.51 | 0.43 |
| Gumbel | 3024.13 | -1503.06 | 0.40 |
| Frank | 3063.85 | -1522.89 | 0.20 |
| Joe | 3052.92 | -1517.46 | 0.21 |
AIC: Akaike’s information criterion, Final llk: Joint maximum log-likelihood, τ: Kendall’s tau.
Source: Alert Hospital, Addis Ababa, Ethiopia; from January 1, 2018 to December 30, 2021.
