Adaptation of the questionnaire the interstitial cystitis symptom index and problem index and pelvic pain and urgency/frequency (PUF) patient symptom scale to the brazilian culture

Author(s)

Marcella Lima Victal Fernandes

• Document type: Master's Dissertation
• Press: Campinas, SP.
• Institution: Universidade Estadual de Campinas (UNICAMP). Faculdade de Ciências Médicas
• Defense date: 2012-04-07

Examining board members

Maria Helena Baena de Moraes Lopes; Roberto Gomes Junqueira; Edinêis de Brito Guirardello

• Advisor: Maria Helena Baena de Moraes Lopes

Abstract

The objective was to translate, adapt to the Brazilian culture and to evaluate psychometric measures of test-retest reliability and discriminant validity of the instruments "The Interstitial Cystitis Symptom Index and Problem Index" (The O'Leary-Sant) and "Pelvic Pain and Urgency/Frequency (PUF) Patient Symptom Scale" used in the diagnosis of interstitial cystitis. We made the methodological steps recommended by the international literature for cultural adaptation. The steps of translation, synthesis of translations and back-translation were performed satisfactorily and evaluation the versions of the synthesis by the committee of experts has resulted in some changes, ensuring the equivalence between the original and translated versions. The "PUF" was pre-tested among 40 subjects and "The O'Leary-Sant" in a sample of 50 individuals due to the need for adjustments due to the low education population. The translation and adaptation process was successful and the instruments, after changes, proved easy to understand and fill quickly. However, this is a study prior to the validation process and will be pressing the use of the instrument in new research to be assessed its measurement properties. The stability of test-retest was evaluated using intervals of 3 to 7 days between the two applications. To check the discriminant validity were used three groups: patients with interstitial cystitis (IC), and two control groups: one composed of individuals with at least one symptom of CI (control 1) and another for those without symptoms (control 2). The test-retest was administered to 24 patients with IC (study group). The Intraclass Correlation Coefficient (ICC) was 0.56, IC: 95% (0.21-0.78) for the index of symptoms of "The O'Leary-Sant", 0.48, IC: 95% (0.10-0.73) for the index of issues of "The O'Leary-Sant" and 0.49, IC: 95% (0.12-0.74) for PUF. For the analysis of discriminant validity between groups used the Fisher exact test and odds ratios to identify the differences. The p-value <0.0001 indicated that, considering a significance level of 5%, the null hypothesis is rejected, ie, there were signs that at least two different groups were compared to the proportion of patients with interstitial cystitis. It was concluded that the two instruments analyzed did not reach the appropriate value for reliability, which creates the need for future studies of analyzes of psychometric measures in a larger sample of patients with interstitial cystitis (AU)

• FAPESP's process: 10/04852-3 - Adaptation of the "interstitial cystitis symptom index and problem index" "pelvic pain and urgency/frequency (PUF) Patient symptom scale" and to Brazilian culture
• Grantee: Marcella Lima Victal Fernandes
• Support Opportunities: Scholarships in Brazil - Master