Reliability and validity study of a Turkish version of the Communicative Effectiveness Survey-Revised (CES-R).
Merve Sapmaz Atalar, Gençer Genç, Ahsen Erim and 4 others
PMID 37519016WHAT IT FOUND
The Turkish Communicative Effectiveness Survey-Revised reliably distinguishes general from difficult communication situations in people with Parkinson's disease.
Scores were stable over two weeks and highly consistent, supporting its use to assess participation barriers beyond simple speech intelligibility.
Key findings
01The Turkish CES-R consistently identified two distinct factors: communication in general situations and communication in difficult situations.
02Internal consistency was high for the total scale and both subscales in both the Parkinson's and control groups.
03Test-retest reliability remained high when the scale was administered again two weeks later to a subset of participants.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The study was conducted at a single hospital site in Turkey, limiting generalizability to other cultural or linguistic regions. Test-retest reliability was only assessed in 36 participants, which is a small subset of the total sample. No cutoff scores were established to define clinical impairment levels. The control group was significantly younger and more educated than the Parkinson's group, which may confound comparisons.
Declared interests
The authors declare no conflicts of interest.
The easy way to misread this
Do not assume the Voice Handicap Index-10 is a valid proxy for communicative effectiveness in Parkinson's disease. In this study, VHI-10 scores did not significantly differ between patients and controls, whereas the CES-R did, indicating that voice quality alone does not reflect the participation barriers captured by the CES-R.