This article deals with the phenomenon of repeated contracts, specifically the effect of trust in public contracts. Our main objective is to identify the factors that influence the concluding of repeated contracts and to verify whether repeated contracts lead to increases in prices. We use a complex dataset of public procurement of municipalities in the Czech Republic for the period of 2014-2017, which covers more than 4,000 public contracts. This range of data allows a larger number of variables to be applied, including specific independent variables concerning municipalities, such as the size of the municipality. The data allow us to study this subject by means of both a general model tested on all public contracts and a partial model applied to public works. The presented results of quantitative econometric models from the data obtained from the awards of public contracts in the municipalities of the Czech Republic show that the fact of whether it was a repeated contract or a contract performed by a new (unknown to a contracting authority) supplier affected the chance of winning a contract.

中文翻译：

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另一种尘埃落定：捷克共和国的经常性采购合同

本文涉及重复合同现象，特别是公共合同中的信任效应。我们的主要目标是确定影响重复合同签订的因素，并验证重复合同是否导致价格上涨。我们使用了 2014 年至 2017 年期间捷克共和国市政当局公共采购的复杂数据集，其中涵盖了 4,000 多个公共合同。这一范围的数据允许应用更多的变量，包括与市政当局有关的特定自变量，例如市政当局的规模。这些数据使我们能够通过在所有公共合同上测试的通用模型和应用于公共工程的部分模型来研究这个主题。