Table 1.

Demographic Distribution and Clinical Characteristics

Pre- and Post-Operative Variables	Number	Percent (%)
	Mean ± SE
Sex
Male	490	52.8
Female	438	47.2
Age (y)	33.8 ± 0.5
Right maxillary accessory ostium	274	29.5
Left maxillary accessory ostium	274	29.5
Bilateral maxillary accessory ostium	172	18.5
Right maxillary sinusitis	410	44.2
Left maxillary sinusitis	403	43.4
Bilateral maxillary sinusitis	326	35.1
Right ethmoidal sinusitis	305	32.9
Left ethmoidal sinusitis	292	31.5
Bilateral ethmoidal sinusitis	238	25.6

Abbreviation: SE, standard error.