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Both rapid leadership turnover and remarkably durable leaders can be found side by side in African systems of personal rule. In order to explain differences in time in power among African leaders we employ life tables analysis and hazard models, a multivariate technique. We find that the risk of losing power is a decreasing function of time that is little affected by country or leader particularities. The best predictor of whether a leader will lose power in any given period is the length of rule up to that point.
Bienen et al. (Wed,) studied this question.