How much does good data matter?

The case of resources available to children is used to determine the importance of good data. That is, do inequality measures differ when we are able to measure joint parental caring time rather than individual parental time, and to what extent does moving from quantity to time to value of time affect inequality measures? We find that better data matter in both cases implemented on information from US, UK, DK and Canada. We also find that the distribution of resources available to children is substantially more equitable in Denmark than in the other countries and that the levels are higher, no matter the measure.