Table III.

Comparison of Vestibular Autorotation Test (VAT) response ordinal categories for women with and without hyperemesis gravidarum (HG) for Study Visits 1, 2, and 3.

VAT response	Women without HG Mean ± s.d., Median	Women with HG Mean ± s.d., Median	P value
VISIT 1
Horizontal gain, low Hz**	N = 44	N=20	0.0066
	4.07 ± 0.97	4.70 ± 1.13
Horizontal gain, med Hz**	N = 45	N = 19	0.0045
	3.80 ± 1.25	4.63 ± 1.16
Horizontal gain, high Hz*	N = 31	N = 13	0.0165
	4.06 ± 1.26	4.85 ± 1.28
Vertical gain, low Hz	N = 46	N = 20	0.6067
	3.91 ± 0.72	3.85 ± 0.67
Vertical gain, med Hz	N = 45	N = 17	0.9199
	3.87 ± 0.69	3.94 ± 0.24
Vertical gain, high Hz	N = 39	N = 12	0.8237
	3.87 ± 0.77	4.00 ± 0
Horizontal phase, low Hz	N = 44	N = 20	0.3720
	3.86 ± 0.95	3.70 ± 0.80
Horizontal phase, med Hz*	N = 46	N = 20	0.0273
	4.33 ± 1.43	3.60 ± 1.14
Horizontal phase, high Hz	N = 32	N = 14	0.0734
	4.00 ± 1.30	3.36 ± 1.15
Vertical phase, low Hz	N = 46	N = 20	0.2496
	4.83 ± 1.22	5.30 ± 1.42
Vertical phase, med Hz	N = 45	N = 16	0.3755
	4.49 ± 1.22	4.75 ± 1.13
Vertical phase, high Hz	N = 33	N = 10	0.5947
	4.61 ± 1.39	4.80 ± 1.14
VISIT 2
Horizontal gain, low Hz**	N = 30	N=8	0.0028
	4.10 ± 0.99	5.25 ± 1.28
Horizontal gain, med Hz**	N= 30	N = 8	0.0073
	4.00 ± 1.02	5.00 ± 1.31
Horizontal gain, high Hz	N = 23	N = 6	0.1774
	4.00 ± 1.21	4.67 ± 2.25
Vertical gain, low Hz	N = 30	N = 8	0.3363
	3.83 ± 0.95	4.13 ± 0.35
Vertical gain, med Hz	N = 29	N = 8	0.5168
	3.76 ± 0.87	4.00 ± 0.00
Vertical gain, high Hz	N= 23	N = 6	0.8061
	3.87 ± 0.76	4.00 ± 0.00
Horizontal phase, low Hz*	N = 29	N = 8	0.0370
	4.38 ± 1.24	3.50 ± 1.07
Horizontal phase, med Hz*	N = 29	N = 8	0.0104
	4.52 ± 1.35	3.38 ± 1.07
Horizontal phase, high Hz	N = 23	N = 6	0.0756
	4.39 ± 1.41	3.33 ± 1.21
Vertical phase, low Hz	N = 29	N =8	0.1835
	5.34 ± 1.37	4.75 ± 1.39
Vertical phase, med Hz	N = 28	N = 8	0.4098
	5.14 ± 1.30	4.75 ± 1.16
Vertical phase, high Hz	N = 20	N = 5	0.1972
	5.30 ± 1.34	4.60 ± 1.34
VISIT 3
Horizontal gain, low Hz	N = 21	N=13	0.5320
	4.38 ± 0.80	4.69 ± 1.18
Horizontal gain, med Hz	N = 21	N = 12	0.2786
	4.14 ± 0.85	4.58 ± 1.16
Horizontal gain, high Hz	N = 20	N = 11	0.6363
	3.95 ± 0.94	4.36 ± 1.43
Vertical gain, low Hz	N = 20	N = 12	0.8053
	3.95 ± 0.51	4.00 ± 0.60
Vertical gain, med Hz	N = 20	N = 12	0.8864
	3.95 ± 0.51	4.00 ± 0.85
Vertical gain, high Hz	N = 16	N = 10	0.6175
	4.06 ± 0.68	3.90 ± 0.74
Horizontal phase, low Hz	N = 21	N = 13	0.9619
	4.14 ± 0.91	4.00 ± 0.41
Horizontal phase, med Hz	N = 21	N = 12	0.5966
	4.24 ± 1.30	4.00 ± 0.85
Horizontal phase, high Hz	N = 21	N = 10	0.3128
	4.33 ± 0.97	3.90 ± 1.45
Vertical phase, low Hz	N = 20	N = 12	0.1537
	5.20 ± 1.28	4.50 ± 0.67
Vertical phase, med Hz	N = 20	N = 12	0.2378
	4.70 ± 1.13	4.25 ± 0.62
Vertical phase, high Hz	N = 14	N = 10	0.4839
	4.21 ± 0.89	4.10 ± 1.10

^*Statistically significant at P < 0.05

^**Statistically significant at P < 0.01