An apparatus (1) for assisting a user in determining a level of confidence in a risk assessment, the apparatus comprising: input means (3) for receiving at least one of a set of factors each of which can affect the level of confidence in the risk assessment; storage means (5) for storing the set of factors and a set of weighting indicators, wherein each factor within the set of factors is associated with a weighting indicator from the set of weighting indicators; processing means (7) for processing the at least one of the set of factors entered into the input means (3) and processing the set of factors stored in the storage means (3) in order to identify a factor in the set of factors which corresponds to the at least one factor entered into the input means (3); and output means (9) for outputting the set of weighting indicators and the weighting indicator associated with the factor identified by the processing means (7).