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Table 1 Pearson correlations between ILI incidence from the OOH GPC and the WIV-ISP data

From: Influenza epidemic surveillance and prediction based on electronic health record data from an out-of-hours general practitioner cooperative: model development and validation on 2003–2015 data

Season

OOH GPC vs WIV-ISP

RW-1 vs WIV-ISP

2003–2004

0.91 (34)

0.94 (34)

2004–2005

0.88 (38)

0.93 (38)

2005–2006

0.76 (37)

0.83 (37)

2006–2007

0.89 (52)

0.92 (52)

2007–2008

0.78 (52)

0.89 (52)

2008–2009

0.92 (52)

0.96 (52)

2009–2010

0.95 (52)

0.97 (52)

2010–2011

0.92 (52)

0.96 (52)

2011–2012

0.87 (52)

0.91 (52)

2012–2013

0.89 (52)

0.93 (52)

2013–2014

0.85 (52)

0.93 (52)

2014–2015

0.90 (46)

0.94 (46)

  1. OOH GPC out-of-hours general practitioner cooperative, RW-1 first order random walk model, WIV-ISP Scientific Institute of Public Health, Numbers in brackets are number of weeks recorded in both data