Container ports are a major component of international trade and the global supply chain. Hence, the improvement of port efficiency can have a significant impact on the wider maritime economy. This paper deconstructs a representation in the existing literature that neglects the heterogeneity of individual and group-specific terminal operators. In its place, we present a hierarchical model to make a connection between efficiency and terminal operator group characteristics. The paper develops a stochastic frontier model that controls not only individual heterogeneity but also group-specific variations. The model decomposes the total stochastic derivation from the frontier into inefficiency, individual heterogeneity, group-specific variations, and noise components, with the estimation being performed using Markov chain Monte
Highlights• We decompose individual and group-specific variations in frontier analysis.• This study is at the terminal level rather than port level.• Inefficiency is overestimated by a homogeneous frontier analysis.• Terminal operator groups generate more terminal throughput.• Terminal operator groups are more efficient than individual operators.