One finding is that shorthand proxy groupings that are frequently used in the policy debate in fact contain several different sub-groups, each of whom face significantly different sets of employment challenges. For example, the clustering reveals two different groups of economically inactive mothers with young children with very different levels of education, skills and work experience and different levels of household income. Similarly, the analysis reveals three groups of individuals with health difficulties, who differ in terms of their age, work experience and benefit entitlements. The statistical clustering also identified two groups of youth with labour market difficulties who differ in terms of their employment record and the job opportunities likely to be available to them.