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Table 2: Categoric variables for patients with SBC^{^a}
No. of Patients Lost to Follow-Up Survival Progression
Survival Death Y N
Sex 
    Female 62 1 56 6 25 37
    Male 91 2 80 11 40 51
Location 
    OC 26 0 23 3 15 11
    Other 127 3 113 14 50 77
Lobulation 
    Y 79 1 70 9 38 41
    N 74 2 66 8 27 47
Approach 
    Cranial 129 3 114 15 51 78
    Nasal 24 0 22 2 14 10
Blood supply 
    Abundant 83 2 72 11 45 38
    Poor 70 1 64 6 20 50
Texture 
    Soft 73 2 62 11 25 48
    Hard 80 1 74 6 40 40
Resection grade 
    >90% 115 3 103 12 45 70
    ≤90% 38 0 33 5 20 18
Histopathology 
    Conventional 94 1 80 14 46 48
    Chondroid 59 2 56 3 19 40
Postradiotherapy 
    Y 15 0 13 2 5 10
    N 138 3 123 15 60 78
Total 153 3 136 17 65 88
Note:—OC indicates occipitocervical; Y, yes; N, no.
↵a Number of patients is raw data.

	No. of Patients	Lost to Follow-Up	Survival		Progression
	No. of Patients	Lost to Follow-Up	Survival	Death	Y	N
Sex
Female	62	1	56	6	25	37
Male	91	2	80	11	40	51
Location
OC	26	0	23	3	15	11
Other	127	3	113	14	50	77
Lobulation
Y	79	1	70	9	38	41
N	74	2	66	8	27	47
Approach
Cranial	129	3	114	15	51	78
Nasal	24	0	22	2	14	10
Blood supply
Abundant	83	2	72	11	45	38
Poor	70	1	64	6	20	50
Texture
Soft	73	2	62	11	25	48
Hard	80	1	74	6	40	40
Resection grade
>90%	115	3	103	12	45	70
≤90%	38	0	33	5	20	18
Histopathology
Conventional	94	1	80	14	46	48
Chondroid	59	2	56	3	19	40
Postradiotherapy
Y	15	0	13	2	5	10
N	138	3	123	15	60	78
Total	153	3	136	17	65	88