Hazard ratio of consultation estimated by Cox proportional hazards regression for the three consultation groupings.

Results are relative to the baseline group which is females aged 0–4 in no clinical risk group and in Carstairs deprivation quintile 1 who did not receive a seasonal influenza vaccination in the previous season or the current season, had no ILIARI consultations in the previous season and did not receive the H1N1 vaccination in season 2009/10. ILI: Influenza-like illness, ILIARI: Influenza-like illness and acute respiratory infections (excluding asthma), ARI: All influenza-like illness and acute respiratory infections (including asthma).