I bit confusing. I imagine there are four options for each/some questions. It would not make sense to have 4 groups, especially if each group contained one option. This
Columns = Surgical Mask, KN95, N95 respirator, Half-face respirator.
indicates Excel thinking because in db's that's aka repeating fields which we don't usually do, yes? Probably could cut out some confusion if you mocked up something in Excel and pasted it here as a table.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.