Figure 3: Statistical significance of the increasing difficulty experienced by volunteers as level of education decreased. Scores were compared at the corresponding age groups at each level of education using Dunns test (P<0.05). 1 = Studied GCSEs (or equivalent) or left school at 16 years or less; 2 = Studied “A” levels or equivalent; 3 = Studied at degree level (or equivalent) or above. * Difficulty is defined as required >2min or more than 2 prompts from interviewer to answer find information. S = Statistically significantly different to <30 age group, N = Not statistically significantly different to <30 age group.