The four classes of data you can choose from in Analyst. They are QCEW, non- QCEW, Self-Employed, and Extended Proprietors. These categories provide clearer distinctions between types of workers, allowing you to find exactly what you need. You can choose from any combination of these data categories, but we recommend several groupings particularly: QCEW by itself, QCEW+non-QCEW, QCEW+non- QCEW+Self-Employed, or QCEW+non-QCEW+Self-Employed+Extended Proprietors. The easiest way of making the decision about which set to use is this: if you’ve previously used Covered data in Analyst, you should use QCEW+non-QCEW. If you’ve previously used Complete, you should use QCEW+non-QCEW+Self- Employed+Extended Proprietors. If you have no idea what you used previously, your best bet is probably to use QCEW+non-QCEW. See also QCEW Employees and non- QCEW Employees and Self-Employed and Extended Proprietors.