Analysis of morbidity, mortality, and risk factors of tracheostomy-related complications in patients with oral and maxillofacial cancer

Maxillofacial Plastic and Reconstructive Surgery

Table 4 Results of single-factor analysis of the risk factors for tube displacement

Variable	Displacement, present, n = 5 (9.8)	Displacement, absent, n = 46 (90.2)	p value
Patient-related characteristics
Age, years, mean	60.6	54.0	0.378^a
BMI, kg/m², mean	25.5	22.1	0.038^a
Sex			0.070
Male	5 (100.0)	27 (58.7)
Female	0	19 (41.3)
Smoker	5 (100.0)	25 (54.3)	0.049
Alcohol drinker	4 (80.0)	25 (54.3)	0.271
Neck height, cm	34.7	44.6	0.206^a
Pretracheal soft tissue thickness, cm	13.4	11.2	0.298^a
Treatment-related characteristics
Type of neck dissection			0.070
Unilateral	5 (100.0)	27 (58.7)
Bilateral	0	19 (41.3)
Type of flap used			0.649
Fasciocutaneous	2 (40.0)	13 (28.3)
Musculocutaneous	3 (60.0)	27 (58.7)
Osteocutaneous	0	6 (13.0)
Type of tube used			0.668
Single cannula	4 (80.0)	40 (87.0)
Double cannula	1 (20.0)	6 (13.0)

BMI body mass index
^aMann-Whitney test was used to analyze continuous variables. Data in the table are presented as numbers (percent), unless otherwise indicated