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Table 1 Baseline characteristics of the participants in the case-control study on acute respiratory tract infections in the general practice network, 2000–2003

From: Risk factors for acute respiratory tract infections in general practitioner patients in The Netherlands: a case-control study

Characteristics Case patients (n = 493) Control subjects (n = 493)
Sex (%)   
   Male 46 37
   Female 54 63
Age, mean (years)
[P25–P75]
36
[22–49]
37
[22–52]
Received influenza vaccination for the season (%)   
   yes 16 14
   No 84 86