Aim: This study has been designed to develop an assessment tool to be used in determining the patients’ satisfaction level with the peritoneal equilibration test (PET) procedure. Materials and Methods: The development and validation of the peritoneal equilibration test Satisfaction Scale (PETSS) was completed in two phases. Phase I focused on instrument construction and included item development and establishment of concurrent validity. Phase II included the factor analysis and psychometric assessment of the scale. In statistical evaluation of the data descriptive statistics and non-paratmetric tests were used. Results: The first version of the scale that has 3.62 Content Validity Index value was composed of 20 items. It was found that the latest version of the scale that has 14 items explained 46% of the variance. It was found that the Cronbach alfa value of this scale, which has 0.52-0.89 coefficient of item-total correlation was 0.96. Psychometric assessment of the scale revealed that except for type of the PET application, none of the demographic and clinical characteristics effect patients level of satisfaction during the PET application. Conclusion: This preliminary study showed that PETSS was a valid and reliable scale that can be used for determining satisfaction level of patients during PET application.
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