data from research in the health science often violates one, if not all of the assumptions underlying the use of traditional parametric statistics. Non-parametric statistics are another group of tests for statistics inference, which do not make strict assumptions about the population from which the data have been sampled, and may be used for studies with small sample sizes, nominal or ordinal level data, and non-normally distributed variables. Non-parametric techniques are widely applicable to research in the health sciences. The challenge appears to be convincing researchers to adopt these techniques, despite misconceptions and limited exposure. The following review will provide a brief introduction to non-parametric statistics, as they apply to research conducted in the field of health sciences.