Table 1.
Comparison of clinical and test results across different PTA stages.
| PTA stages | Total | Ia | IIa | IIIa | IVa | P value | Statistic method |
|---|---|---|---|---|---|---|---|
| Number | 80 | 19 | 16 | 34 | 11 | ||
| Age (years) | 56.7 (13.54) | 49.73 (14.07) | 57.81 (12.22) | 58.71 (13.39) | 60.91 (12.21) | P = 0.071 | One-way ANOVA |
| Sex | |||||||
| Male/female, n/N | 37/43 | 11/8 | 8/8 | 14/20 | 4/7 | P = 0.506 | Chi-square test |
| PTA | 46.06 (23.80) | 14.65 (7.40) | 33.54 (3.26) | 57.40 (7.83) | 83.48 (7.47) | P <0.001 | One-way ANOVA |
| DHI total | 50.38 (21.20) | 48.74 (24.89) | 54.12 (20.80) | 49.94 (19.86) | 49.09 (21.36) | P = 0.885 | Kruskal–Wallis test |
| No. of vertigo attacks* | 4.68 (3.34) | 4.89 (3.60) | 5.06 (2.84) | 3.94 (2.11) | 6.0 (5.80) | P = 0.668 | Kruskal–Wallis test |
| Abnormal rates in lab tests, % | |||||||
| RCT total | 75 (94) | 17 (89) | 15 (94) | 33 (97) | 10 (91) | P = 0.527 | Chi-square test |
| Gain | 38 (48) | 9 (47) | 8 (50) | 15 (44) | 6 (55) | ||
| Asymmetry | 50 (63) | 15 (79) | 3 (19) | 24 (71) | 8 (73) | ||
| Phase | 43 (54) | 9 (47) | 5 (31) | 20 (59) | 9 (82) | ||
| vHIT total | 46 (58) | 12 (63) | 8 (50) | 20 (59) | 6 (55) | P = 0.880 | Chi-square test |
| H-SC | 8 (10) | 2 (11) | 2 (13) | 2 (6) | 2 (18) | ||
| A-SC | 28 (35) | 7 (37) | 6 (38) | 11 (32) | 4 (36) | ||
| P-SC | 29 (36) | 8 (42) | 5 (31) | 12 (35) | 4 (36) | ||
| VEMP total | 53 (66) | 13 (68) | 10 (63) | 25 (74) | 5 (45) | P = 0.501 | Chi-square test |
| cVEMP | 43 (54) | 11 (58) | 9 (56) | 19 (56) | 4 (36) | P = 0.731 | Chi-square test |
| oVEMP | 38 (48) | 9 (47) | 5 (31) | 20 (59) | 4 (36) | P = 0.275 | Chi-square test |
| No. of involved organs** | 2.69 (1.20) | 2.74 (1.33) | 2.56 (1.15) | 2.79 (1.15) | 2.45 (1.29) | P = 0.853 | Mantel–Haenszel Chi-square test |
PTA, pure-tone average; DHI, Dizziness Handicap Inventory; RCT, rotatory chair test; vHIT, video head impulse test; H-SC, horizontal semicircular canal; A-SC, anterior semicircular canal; P-SC, posterior semicircular canal; VEMP, vestibular-evoked myogenic potential; cVEMP, cervical vestibular-evoked myogenic potential; oVEMP, ocular vestibular-evoked myogenic potential.
*
Vertigo attacks in the last 6 months.
**
Number of involved vestibular end organs.
a
Continuous data are presented as mean (SD) values; otherwise, data are reported as number (percentage).