[A method for assessing reliability of different rates of morbidity with temporary disability in small contingents of workers]. / O metodike otsenki dostovernosti razlichii pokazatelei zabolevaemosti vremennoi netrudosposobnost'iu pri malykh kontingentakh rabotaiushchikh.

Suggested is the technique for mathematical processing of morbidity data proceeding from the replacement of common indicators per 100 workers by partial derivatives proportional to the number of work days a year. Reliability of changes in transforming indicators has been evaluated by means of statistical processing of small parts through Fisher's function phi. The advantages of the proposed technique lie in the fact that it has become possible to obtain important information on morbidity rates for the limited amount of investigation data and to reveal correlation of workers' health status to unfavourable occupational factors.