Design and trial of a new questionnaire for occupational health surveys in companies.

In this article we present an example of our method for instrument development. This method is called the Development Cycle. It consists of four main stages: (1) defining the requirements for an instrument; (2) research, design and pilot testing; (3) implementation and (4) evaluation. An application of the Development Cycle was realized within a project for the development of a basic questionnaire about work and health, to be used at periodic health surveys. This questionnaire had to identify work and work-related health problems in employees with divergent occupations and working conditions. The design of the instrument and the results of its trial in 517 employees is presented. The evaluation of the test results and the modification of the questionnaire are discussed. From 1995, the questionnaire has been implemented in the Dutch OHS services quite successfully.