まず、モノに関する「ビジネスコスト距離」の短縮がどの程度貿易量に影響を与えるかを見るために、第3-1-14表の中のモノの移動に関する項目について、我が国との二国間のみならず、対象国・地域内の第三国間データが収集可能な、①関税率、②港湾インフラ（空港、海港）、③通関手続の透明性、④通関手続の簡素性・迅速性、⑤政情安定性、を説明変数として貿易量の推計を行った。例文帳に追加

First, we estimated the trade volume increase brought by the reduction of the business cost distance in terms of goods. Among factors that affect the flow of goods stated in Table 3-1-14, we used the following items (for which data are available not only for bilateral trade between Japan and a target country, but also bilateral trade between the partner country and the third country in Asia) as explanatory variables in the estimation: (1) tariff rates, (2) harbor and airport infrastructures, (3) transparency of customs procedures, (4)simplicity and speed of customs procedures, and (5) political stability. - 経済産業省