Effects of Kampo medicine hangebyakujutsutemmato on persistent postural-perceptual dizziness: A retrospective pilot study

Table 5 Questionnaire survey factors related to Niigata persistent postural-perceptual dizziness questionnaire improvement at 2 mo

Variables	Estimate	SE	t value	P value
(Intercept)	1.28	0.22	5.59	0.00002c
DHI-E	0.03	0.01	2.56	0.01a
DHI-F	-0.02	0.01	-1.86	0.07
HADS-A	-0.05	0.01	-3.30	0.003b
PSQI	-0.05	0.01	-2.80	0.01a

^aP < 0.05.

^bP < 0.01.

^cP < 0.001.

Residual standard error = 0.27 (df = 19); multiple R-squared = 0.51; adjusted R-squared = 0.41; F-statistic = 5.02 (df, 4 and 19); P value = 0.006; Akaike information criterion = -57.4. DHI-E: Dizziness handicap index–emotional; DHI-F: Dizziness handicap index–functional; HADS-A: Hospital anxiety and depression scale-anxiety; PSQI: Pittsburg sleep quality index.