Table 6.

Overview of the selected studies for calculation of the population attributable fraction for control options to reduce the prevalence of Campylobacter spp. in the primary production of broilers

Reference	Country	Year of study	Number of flocks/farms	Campylobacter spp. prevalence
Allain et al. (2014)	France	2008	121/121a	71.9
Barrios et al. (2006)	Iceland	2001–2003	1091/36	15.4
Borck Høg et al. (2016)	Denmark	2010–2012	3328/104	9.5
Borck Høg et al. (2016)	Norway	2010–2012	1381/173	3.5
Bouwknegt et al. (2004)	Netherlands	1997–2000	495/461a	26.3
Chowdhury et al. (2012)	Denmark	2009–2010	2835/187	14
Ellis‐Iversen et al. (2009)	United Kingdom	2003–2006	603/137	34.2
Hansson et al. (2010)	Sweden	2005	37/37	56.8
Jonsson et al. (2012)	Norway	2002–2007	18488/623	4.7
Lyngstad et al. (2008)	Norway	2005	131/131	n.a.
McDowell et al. (2008)	Northern Ireland	2001–2002	388/88	42
Näther et al. (2009) Summer	Germany	2004–2005	146/146	53
Näther et al. (2009) Winter	Germany	2004–2005	146/146	34
Refregier‐Petton et al. (2001)	France	2001	75/75	42.7
Torralbo et al. (2014)	Spain	2010–2012	291/134	62.5

^aEstimated from information provided in the articles.