Again, we do say that they have assessed the coherence of the selected data product. For example, they routinely compare data from multiple sources and apply methods to ensure the coherence of the data. We also pointed out that because they had concerns about comparability of certain information related to the national household survey, they cautioned their users about that. They make sure their users understand the coherence of the data.
On May 7th, 2014. See this statement in context.