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. 2014 Nov 13;9(11):e112294. doi: 10.1371/journal.pone.0112294

Figure 3. Sensitivity analysis of adjusted influenza vaccine effectiveness.

Figure 3

Adjusted influenza vaccine effectiveness (IVE) assessed for all ages, <65 and> = 65, and by: a) vaccination ascertainment method: Vaccine Information System (VIS), as reported by the patient (recall) and both combined; b) days to swab: seven or less, four or less. Reference category for all analyses includes all patients irrespective of time elapsed to swab and vaccination according to VIS or recall. OR: adjusted odds ratio. OR adjusted as reported in footnotes in Table 6.