RT Journal
A1 Sun C, Hsu H, Hung S
T1 ACute rhinosinusitis treatment
JF JAMA
JO JAMA
YR 2012
FD June 13
VO 307
IS 22
SP 2368
OP 2368
DO 10.1001/jama.2012.4389
UL http://dx.doi.org/10.1001/jama.2012.4389
AB 
First, the authors state that the inclusion criteria were based on the US Centers for Disease Control and Prevention's expert panel diagnostic criteria for acute bacterial rhinosinusitis.2 The criterion “rhinosinusitis symptoms lasting for less than 7 days that had significantly worsened after initial improvement” was independently considered. However, in the original study by Lindbaek et al,3 this symptom was considered in combination with others to give a specificity of only 0.81 and a sensitivity of 0.66. Thus, selection bias may have occurred, with the enrollment of too many patients with less severe rhinosinusitis.