Table 5: Comparison other studies: study characteristics.

Study LandDesignAge yearsDiagnoses/subgroupsReference

This studyAT, DE, NL, UK,  US POCS 529 017 Sore throat/ear pain/Cough
Abbas et al., 2010DERDA21,5642–17Respiratory infection/nonsupportive OM/supportive OM[75]
Ashe et al., 2006USPOCS7200.5–12Symptoms of respiratory illness or OM[76]
Ashworth et al., 2006UKRDA>100,0001–16Sore throat/ear infection/tracheitis or bronchitis[77]
Chung et al., 2007UKPOCS1190.5–12Suspected respiratory infection or OM[78]
Coco et al., 2010USPOCS1,1140.5–12OM[79]
Harnden et al., 2007UKPOCS4250.5–12Cough and fever, “more than a simple cold,” physician considered prescribing antibiotics[80]
Meropol et al., 2009UKRDA>400,0001–17Nonspecific respiratory infection (excluding OM and sinusitis)[7]
Plasschaert et al., 2006NLRDA>8,0000–13OM[2]
Uijen et al., 2011NLRDA>50,0000–17Tonsillitis/OM[81]
van Deursen et al., 2012NLRDA>5,0002–17Respiratory infection[8]
Zuckerman et al., 2007USRDA20,2130–5Upper respiratory tract infection[82]

OM: otitis media. POCS: prospective observational cohort study. RDA: retrospective database analysis.