Translation and validation of the dizziness handicap inventory in Greek language.

OBJECTIVE

The aim of the study was to test the reliability and validity of the Dizziness Handicap Inventory in the Greek language (DHI).

DESIGN

This study was performed in a university tertiary centre. Internal consistency was estimated using Cronbach's alpha for the DHI, physical (DHI-P), functional (DHI-F) and emotional (DHI-E) subscale scores. Correlation between DHI (total and subscales) and the SOT (sensory organisation test) as well as correlation between the DHI and FGA (functional gait assessment) was tested using Spearman's correlation coefficient. Test-retest reliability was tested using ICC (Intraclass Correlation Coefficient).

SAMPLE SIZE

Ninety (90) patients were included in the study.

RESULTS

Internal consistency was excellent for the total score and very good for the physical functional and emotional subscale scores. No statistically significant correlation was found between SOT and DHI. There was a moderate correlation between FGA and total DHI scores (r = -0.472; p < 0.0001) and poor to moderate between FGA and DHI subscale scores (DHI-E r = -0.342; p = 0.001, DHI-F r = -0.448 p < 0.0001, DHI-P r = -0.472 p < 0.0001). Test-retest reliability was excellent.

CONCLUSION

Greek version of DHI is recommended as a valid measure for patients with vestibular disorders.