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Table 5 Average household size of Influenzanet participants and comparison with national statistics (all p < 10 –3 )

From: The representativeness of a European multi-center network for influenza-like-illness participatory surveillance

Influenzanet country Influenzanet General population
  Household size (95% CI) Household size
BE 3.4 (3.3 – 3.5) 2.3
FR 2.9 (2.8 – 3.0) 2.2
IT 2.8 (2.7 – 3.0) 2.4
NL 3.2 (3.2 – 3.3) 2.2
PT 4.0 (3.2 – 4.8) 2.6
SE 3.9 (3.3 – 4.5) 2.1
UK 4.0 (3.1 – 5.0) 2.3