Table 7:

Effect of study covariates (age, sex, jaw) on median overall survival time

	Median overall survival time per week (95% CI)	Logrank χ2	p-value
Age/years
<6 years	33.73 (28.05–39.42)	23.68	<0.001*
≥6 years	59.55 (54.47–64.62)
Sex
Male	48.95 (40.68–57.22)	1.77	0.183
Female	41.96 (35.38–48.56)
Upper jaw	43.67 (38.02–49.33)	0.544	0.461
Lower jaw	52.17 (40.49–63.85)
Group I	53.42 (43.84–63)	6.44	0.092
Group II	51.23 (42.37–60.09)
Group III	41.23 (31–51.47)
Group IV	35.92 (26.29–45.56)

*, p-value < 0.05 (significant difference)