Table 2:

Overview of different distance measurements

Location	Normal Distribution (+/−)	Group 1 Fam + HCI +		Group 3 Controls Matched with Group 1		Group 2 Fam + HCI −		Group 4 Controls Matched with Group 2
Location	Normal Distribution (+/−)	Mean (mm)	SD	Mean (mm)	SD	Mean (mm)	SD	Mean (mm)	SD
Frontal total	+	11.2^b	3.2	5.9^b	1.4	5.6	1.4	5.5	1.8
Frontal inner table	−	3.2^b	1.8	1.2^b	0.7	1.5^c	0.4	1.1^c	0.4
Frontal outer table	+	2.0^b	0.5	1.1^b	0.3	1.6^d	0.4	1.1^d	0.5
Parietal total	−	9.4^b	3.7	2.2^b	1.1	2.8	0.7	2.4	1.1
Parietal inner table	+	1.7	1.0	1.1	0.4	1.5	0.4	0.8	0.4
Parietal outer table	+	1.9^a	0.6	1.0^a	0.4	1.4	0.5	1.2	0.7
Occipital total	+	7.6^b	2.1	4.9^b	1.5	5.6	1.2	5.0	2.0
Occipital inner table	+	1.9^a	0.9	0.9^a	0.2	1.2^c	0.3	0.9^c	0.3
Occipital outer table	+	2.4	0.8	2.0	0.5	1.7	0.5	1.6	0.6
Frontal skull base	−	2.9^b	2.0	0.8^b	0.1	1.6^d	0.6	0.8^d	0.2
Middle skull base	−	4.3^b	1.9	0.7^b	0.1	1.3^d	0.4	0.6^d	0.1
Foramen magnum	+	1.9^b	0.3	1.3^b	0.4	1.8^d	0.4	1.2^d	0.2
Clivus inner table	+	1.1	0.4	0.8	0.2	1.2^d	0.3	0.8^d	0.3
Porus IAC	−	1.1^b	0.4	4.1^b	0.6	4.0	0.7	4.3	0.8
Fundus IAC	+	2.8^b	1.1	5.3^b	1.0	5.1	0.5	5.1	0.7
Optic canal	+	3.7	1.6	4.2	0.8	4.1	0.5	4.0	0.8
Vidian canal	+	1.0	0.5	0.9	0.3	1.2	0.4	1.0	0.3
Coronoid suture	+	4.6^a	1.2	3.0^a	0.9	2.7	1.7	4.0	1.5
Lambdoid suture	+	7.0^b	2.4	4.0^b	1.4	3.9	1.5	4.5	1.6

Note:—Fam indicates family member.
↵a Paired t test 1–3, P ≤ 0.05.
↵b Paired t test 2–4, P ≤ 0.05.
↵c Paired t test 2–4, P ≤ 0.005.
↵d Paired t test 2–4, P ≤ 0.005.