Materials consist of patients with definite Meniere's disease in Groups I, II, III and IV.

Sex (male/female); Age, age (yr) at start of treatment; Lat, laterality (left/right); Duration, duration of disease (months) before start of treatment; pAVP, plasma vasopressin concentration (pg/mL) at start of treatment; crtsl, serum cortisol concentrations (μg/mL) at start of treatment; SDS, self-rating depression scale score at start of treatment; SRS-18, stress response scale score at start of treatment; Vertigo, average number of definitive spells per month during the 6 months before start of treatment; Hearing: worst average of hearing level during the 6 months before start of treatment. There were no significant differences between the four groups in these variables (n.s.).