Science, Maths & Technology
Uncertainty within the Realm of Statistics
...universal credit. How did you do the matching? First of all, I never relied on a single source. Some sources are more reliable than others. If all the sources agree, then we can be confident that the two records have matched. If the sources differed, then you would worry. In this specific case the best source to match records is the National Insurance (NI) number, then...