Can Med Assoc J - March 15, 1997 / Table 1: Diagnosis and treatment of sinusitis

Diagnosis and treatment of sinusitis

Table 1: Independent predictors of acute sinusitis*

Symptom or sign Likelihood ratio (and 95% CI†)

Positive Negative

Maxillary toothache 2.5 (1.25.0) 0.9 (0.81.0)

Purulent secretion 2.1 (1.53.0) 0.7 (0.50.8)

Poor response to decongestants 2.1 (1.43.1) 0.7 (0.60.9)

Abnormal transillumination result 1.6 (1.32.0) 0.5 (0.40.7)

History of coloured nasal discharge 1.5 (1.21.9) 0.5 (0.40.8)

*Data adapted from Williams and Simel [31].
†CI = confidence interval.

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| CMAJ March 15, 1997 (vol 156, no 6) / JAMC le 15 mars 1997 (vol 156, no 6) |
| CPG Infobase / Infobanque des GPC |

Table 1: Independent predictors of acute sinusitis*
Symptom or sign	Likelihood ratio (and 95% CI†)
Symptom or sign	Positive	Negative
Maxillary toothache	2.5 (1.25.0)	0.9 (0.81.0)
Purulent secretion	2.1 (1.53.0)	0.7 (0.50.8)
Poor response to decongestants	2.1 (1.43.1)	0.7 (0.60.9)
Abnormal transillumination result	1.6 (1.32.0)	0.5 (0.40.7)
History of coloured nasal discharge	1.5 (1.21.9)	0.5 (0.40.8)
*Data adapted from Williams and Simel [31]. †CI = confidence interval.