. Author manuscript; available in PMC: 2017 Nov 1.

Published in final edited form as: Neurosurg Focus. 2016 Nov;41(5):E5. doi: 10.3171/2016.8.FOCUS16241

TABLE 4.

Head shape and brain/skull ratios in infants with PHH compared to infants with RVD

Variable	PHH	RVD	p Value
No. of patients^*	18	18
Head shape			0.91
Normocephalic	5 (27.8)	7 (38.9)
Brachycephalic	4 (22.2)	3 (16.7)
Dolichocephalic	4 (22.2)	5 (27.8)
Bitemporal narrowing	1 (5.6)	1 (5.6)
Asymmetric/irregular	4 (22.2)	2 (11.1)
Mean cephalic index ± SD (range)	79.7 ± 7.1 (66, 99)	81.9 ± 6.9 (71, 98)	0.36
Mean supratentorial brain/skull ratio ± SD (range)	0.93 ± 0.024 (0.90–0.99)	0.90 ± 0.045 (0.83–0.96)	0.008
Mean infratentorial brain/skull ratio ± SD (range)	0.87 ± 0.061 (0.76–0.97)	0.72 ± 0.093 (0.58–0.86)	<0.0001

Limited to infants with MRI performed after resolution of ventricular dilatation. Reflects number of MR images available for quantification rather than total study participants.