Discrete time survival model of the Asian elephant calf mortality risk from birth to 5 years (n = 975 calves with 4121 observations (227 deaths)).

Estimates with standard errors (S.E.) (positive estimate reflects increasing mortality risk) are provided for all variables (except interactions with several categories) and odds ratios (OR) with 95% confidence intervals (CIs) for categorical variables. Terms retained in the final model are shown above the constant, whereas examples of those that were rejected from the final model are shown below it. Mother's identity and area were fitted as repeated terms.