|Symptom, sign, or blood test (number of studies investigating item)||Number of studies finding an association||+LR|
|*+LR = positive likelihood ratio; defined in glossary|
|Purulent rhinorrhoea (4)||3||1.5, 1.5, 1.9|
|Pain in teeth (4)||2||2.1, 2.5|
|Beginning with common cold (4)||1||1.4|
|Unilateral maxillary pain (4)||1||1.8|
|2 phases in the illness history (1)||1||2.1|
|Lack of response to nasal decongestants (1)||1||2.1|
|Purulent secretion in nasal cavity (4)||2||2.1, 5.5|
|Pain at bending forward (4)||1||1.6|
|Transillumination of sinus (1)||1||1.6|
|Elevated erythrocyte sedimentation rate, >10 mm/h for males and >20 mm/h for females (2)||2||1.7, 2.9|
|Increased C-reactive protein, >10 mg/l (2)||1||1.8|
- Assessment (screening or diagnosis)
Review: specific signs and symptoms can help practitioners to diagnose acute purulent sinusitis in general practice
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