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

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