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How do I interpret the graph shown in my complex disease results?

The results we show are explained on the basis of a type of graph known as a Gaussian bell. The bell represents the number of samples used for analysis on the vertical axis and the genetic risk on the horizontal axis. The central peak of the bell indicates that most of the samples are at intermediate or neutral risk. A result towards the right end of the bell will indicate a tendency towards higher genetic risk. On the other hand, a result towards the left end of the bell will indicate a trend towards lower risk or protection against that disease. At both ends the number of samples is lower; this is because most of the population has a medium risk for complex diseases.