Column without a label
Outcome: Nasal Septal Perforation - Definition 1
Outcome: Nasal Septal Perforation - Definition 2

Column without a label
Single Propel Stent (One-year follow-up)
Single Sinuva Stent (One-year follow-up)
Repeat Propel Stent (One-year follow-up)
Repeat Sinuva Stent (One-year follow-up)
Single Propel Stent (Two-year follow-up)
Single Sinuva Stent (Two-year follow-up)
Repeat Propel Stent (Two-year follow-up)
Repeat Sinuva Stent (Two-year follow-up)

Column without a label
numav, numed, numoa, numis, numclass, numgeneric, numip, numrx