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Table 1 List of observed and latent variables

From: The impacts of port infrastructure and logistics performance on economic growth: the mediating role of seaborne trade

Latent Construct

Observed Indicators

Abbreviation

Quality of port infrastructure (QPI)

Quality of port infrastructure

QPI

Logistics performance (LP)

Ability to track and trace consignments

LPIAT

Competence and quality of logistics services

LPICQ

Ease of arranging competitively priced shipments

LPIEA

Efficiency of customs clearance process

LPIEC

Frequency with which shipments reach consignee within scheduled or expected time

LPIFS

Quality of trade and transport-related infrastructure

LPIQT

Seaborne trade (ST)

Container port traffic (‘000 TEUs)

CT

Liner shipping connectivity index

LSC

National economy (NE)

GDP per capita, PPP (Int. $)

PGDP