Table 5.

Descriptive statistics for comparison of CMI participants with additional prevalent conditions and control participants.

No.	Measurements	Migraine headaches		Fibromyalgia		Chronic fatigue syndrome		Raynaud phenomenon		Spinal dysraphism		Endocrine disease		Sleep apnea
		Meandiff	Cohen's d	Meandiff	Cohen's d	Meandiff	Cohen's d	Meandiff	Cohen's d	Meandiff	Cohen's d	Meandiff	Cohen's d	Meandiff	Cohen's d
28	McRae line length	1.31	0.52**	0.83	0.17	0.80	0.11	0.68	0.1	0.73	0.22	0.80	0.14	1.92	0.78*
24	Tonsillar position	9.64	2.45**	9.39	1.96**	9.58	1.94**	9.51	1.70**	8.78	2.05**	8.30	1.49**	11.25	2.57**
16	Fastigium height	−2.96	−1.15**	−2.91	−1.02**	−2.90	−0.98**	−2.65	−0.80**	−2.32	−0.86**	−3.43	−0.93**	−4.35	−1.40**
17	Pons height	−2.26	−0.72**	−2.55	−0.78**	−2.38	−0.70**	−2.75	−0.68**	−2.40	−0.62**	−4.35	−0.90**	−3.73	−0.97*
18	Corpus Callosum height	−3.16	−1.03**	−3.34	−0.88**	−3.71	−0.95**	−3.09	−0.68**	−2.86	−0.74**	−4.07	−0.83**	−4.22	−1.25**
3	Clivus length	−3.70	−0.87**	−3.24	−0.62**	−2.83	−0.54**	−4.73	−0.81**	−3.97	−0.74**	−4.74	−0.70**	−3.75	−0.83**
1	PCF height	−2.78	−0.64**	−2.27	−0.35*	−3.03	−0.50*	−1.75	−0.23	−0.98	−0.19	−2.58	−0.32	−2.98	−0.58*
4	PCF area (mm2)	−144	−0.53**	−132	−0.32	−193	−0.48*	−143	−0.33	−115	−0.33*	−148	−0.31	−230	−0.80*
5	PCF osseous area (mm2)	−148	−0.60**	−104	−0.32	−124	−0.37*	−176	−0.54*	−159	−0.55**	−248	−0.63**	−233	−0.92**
20	Basal angle (°)	5.51	0.70**	3.35	0.34*	3.58	0.36*	7.28	0.64**	4.21	0.45*	4.98	0.32	4.77	0.61*
23	Wackenheim angle (°)	−5.92	−0.85**	−4.45	−0.68**	−7.07	−0.86**	−8.38	−0.75**	−2.76	−0.36*	−7.72	−0.71**	−1.03	−0.11
7	Boogard angle (°)	4.23	0.62**	4.67	0.63**	4.77	0.61**	6.20	0.62**	3.47	0.40*	8.54	0.73**	6.47	0.71*
10	AP dura–Op	1.66	0.72**	0.83	0.25	1.59	0.38*	0.69	0.17	0.83	0.26	−0.45	−0.02	2.00	0.75*
12	Basion to PAL	1.93	0.84**	1.81	0.77**	1.29	0.51*	2.04	0.62**	1.13	0.39*	3.52	0.88**	1.13	0.45
13	Odontoid angle (°)	−3.49	−0.58**	−1.86	−0.33*	−3.94	−0.60**	−2.00	−0.32	−2.58	−0.39*	−4.81	−0.54*	−4.23	−0.96**
25	Intracranial height	−2.52	−0.55**	−2.3	−0.42*	−1.97	−0.35*	−2.48	−0.38*	−2.99	−0.46*	−5.60	−0.66**	−2.78	−0.48*
26	Intracranial diameter	−2.67	−0.36*	−4.29	−0.44*	−5.07	−0.45*	−1.1	−0.07	−4.01	−0.46*	−3.82	−0.32	−4.74	−0.68*
27	Intracranial area (mm2)	−387	−0.43**	−474	−0.38*	−610	−0.45*	−232	−0.16	−519	−0.42*	−441	−0.27	−451	−0.48

Measurements in millimeters unless otherwise noted, Meandiff: APC-control. Italicized and bold values show changes in significant and trending results when controlling for age and/or BMI group differences. Measurements highlighted in blue were found to be significantly different in all 12 PCs.

^*p < 0.05 and

^**p < 0.002. Sleep apnea results could not be controlled for group differences in age or BMI due to small sample sizes.