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[Validation of the chronometer test as a method of screening for hypoacusis in patients aged 65 years and older]
C Menéndez Villalva1, P Gayoso Diz, J Fariña Conde
1Unidad Docente de Medicina Familiar y Comunitaria, Equipo de Atención Primaria de Mariñamansa, Complejo Hospitalario Cristal-Piñor, Orense.
Objective:
Evaluation of the chronometry test as a screening procedure for hypoacusia compared with tonal audiometry, in patients over 65 years.
Design:
Cross-sectional study.
Setting:
Mariañamansa health area (Ourense).
Patients:
The first 49 patients over 65 who came to the medical consultations in June and July 1992 were selected, irrespective of the reasons for their visit; there were 17 males and 32 females, with and average age of 72.4 +/- 4.6 and 71.9 +/- 4.5. Only one patients consulted directly about loss of hearing.
Measurements And Main Results:
A statistically significant association was found between the chronometry test and the audiometry test (gold-standard), significant at p < 0.005 for the left ear and p < 0.05 for the right ear. The test achieved a sensitivity of 0.85 and specificity of 0.76 in the case of the left ear, and 0.84 (sensitivity) and 0.56 (specificity) for the right ear. The kappa rate was 0.55 for the right ear and 0.67 for the left ear, showing agreement that went well beyond chance.
Conclusions:
In our view, the chronometry test constitutes an cheap, effective, simple, and replicable procedure for the detection of hypoacusia in patients aged over 65, and one which can usefully be used when no audioscope is available.