Odds ratio (OR) for attending out-of-hours (OOH) services as compared with general practice during the 2008/09 influenza season (week 1–9 2009) and pandemic influenza period (week 30–51 2009).

Multiple logistic regression analyses using practice type (general practice (ref.) and OOH services) as dependent variable and diagnosis, gender, age and centrality as explanatory variables.
1The centrality is defined as a municipality’s geographical location in relation to a centre where there are important functions (central functions) and is measured on a scale of 0–3 where 0 is the least and 3 is the most central.