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On this slide we see the original scientific publication authored by Lind and published in 1750.  But what do we mean by “research activities”?  “Research” is a wide concept that can be either practical problem solving or “scientific research”.  But what is the difference between practical problem solving and scientific research?  The difference is that practical problem solving does not use scientific methods, which is the essence of scientific research. Knowledge about accidents can obtained by routine collection of information and the method can be qualified by research activities. The scientific research methods that are used in health science in general and especially in occupational health and safety are mainly two methods, quantitative and qualitative method. The two methods are used separately or combined and thereby supplementing each other. The qualitative method consists of observation and interviews with smaller samples from the population than is used in the epidemiological method.