Translation and Reliability Testing of the Thai Version of the Postoperative Nausea and Vomiting Impact Scale (SPONVIS): A Pilot Study
Keywords:
Postoperative Nausea and Vomiting, PONV, Postoperative Nausea and Vomiting Impact Scale, Translation Process, ReliabilityAbstract
This pilot study aimed to translate the Postoperative Nausea and Vomiting Impact Scale (PONV) from English into Thai and to examine the reliability of the Thai version. The translation process was adapted from the World Health Organization’s guidelines for instrument translation and validation and consisted of: 1) forward translation from English to Thai, 2) expert review of the translated version, 3) pretesting with monolingual Thai speakers, 4) back-translation from Thai into English, and 5) assessment of equivalence by the original instrument developer. The finalized Thai version was pilot tested in 20 postoperative neurosurgical patients. Inter-rater reliability was assessed by three nurses in 10 patients, and test–retest reliability was evaluated in another 10 patients. Data were analyzed using the intraclass correlation coefficient (ICC). The results were as follows.
1. The Thai version of the Postoperative Nausea and Vomiting Impact Scale, developed through a standardized translation process, demonstrated equivalence with the original instrument in terms of language, content, and meaning, and was culturally appropriate for Thai patients.
2. The intraclass correlation coefficients for inter-rater reliability and test–retest reliability were .92 and .99, respectively, indicating excellent reliability.
These findings suggest that the Thai version of the scale demonstrates excellent reliability and can be used to assess the impact of postoperative nausea and vomiting among neurosurgical patients. However, further studies with larger and more diverse samples are recommended to confirm its reliability.
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