Validation of the Thai version of the Prolapse and Incontinence Knowledge Questionnaire (PIKQ).

INTRODUCTION AND HYPOTHESIS: The Prolapse and Incontinence Knowledge Questionnaire (PIKQ) was developed and validated to assess women's knowledge regarding etiology, diagnosis and treatment of pelvic organ prolapse (POP) and urinary incontinence (UI). We aimed to translate and validate a Thai version of the PIKQ to use as a tool to evaluate knowledge of POP and UI among Thai-speaking women. METHODS: The English PIKQ, which comprises the PIKQ-POP and PIKQ-UI sections, was translated into Thai. Psychometric properties of the final version of the Thai PIKQ were tested for content validity, construct validity, internal consistency and test-retest reliability among 168 women attending a gynecology clinic and 150 nurses. RESULTS: Regarding content validity of the final Thai PIKQ, the number of missing items was 0. Participants in the nurse group were more likely than those in the patient group to select the correct answer for all items for the POP scale and UI scale (P < 0.001). For internal consistency testing, Cronbach's alpha coefficient was 0.745 for the PIKQ-POP and 0.754 for the PIKQ-UI scales, suggesting that the items had relatively high internal consistency. The item-total correlation values ranged from 0.204 to 0.539, showing an adequate correlation of each item with the scale overall. The correlation coefficients between the test and retest for PIKQ-POP and PIKQ-UI were 0.685 and 0.735, respectively (P < 0.001). CONCLUSIONS: The Thai PIKQ is a simple instrument which shows good validity and high reliability and could be a useful tool for assessing knowledge regarding POP and UI in clinical practice.

Validation of the Thai version of the Female Genital Self-Image Scale (FGSIS).

BACKGROUND: Female genital self-image is associated with sexual health, sexual behavior, and gynecologic health behavior. The Female Genital Self-Image Scale (FGSIS) is a simple, validated instrument that quantifies genital self-image in women. The study aim was to translate the original English FGSIS into Thai and test its psychometric properties among Thai-speaking women. METHODS: A cross-sectional, psychometric study of sexually active women attending a health check-up clinic at a university hospital in Thailand was conducted. On a volunteer basis and convenience sampling, 90 sexually active women were recruited between December 2020 and January 2021. Translation and transcultural adaptation of the English FGSIS into Thai were performed. The validity and reliability of the Thai FGSIS were assessed by examining content validity, face validity, internal consistency, construct validity, and test-retest reliability. The content validity of the Thai FGSIS was evaluated by assessing missing values, and internal consistency was evaluated using Cronbach's alpha. Scores on the FGSIS and the Female Sexual Function Index (FSFI) were compared to examine convergent validity (using Pearson correlations). Confirmatory factor analysis (CFA) was also conducted. Test-retest reliability was measured by re-administering the Thai FGSIS to the same group of respondents after a 2-week interval. RESULTS: The final Thai FGSIS was developed and assessed by a panel of experts. Data were examined for 86 respondents with average age of 32.5 ± 9.11 years. Content validity assessed using the level of missing data demonstrated no missing items. The overall internal consistency was high (Cronbach's alpha: 0.847). Strong correlations (r = 0.61-0.83) between FSFI and FGSIS total scores (p < 0.01) were demonstrated. In addition, five domains of sexual functioning and the FSFI total score showed high correlations ranging from r = 0.089 to r = 0.383 (p < 0.05), which confirmed convergent validity. CFA identified a two-factor structure for the Thai FGSIS. The test-retest reliability for 38 participants was 0.937 (p < 0.05). CONCLUSION: The Thai FGSIS was found to be a highly valid and reliable instrument with which to measure female genital self-image in Thai-speaking women.

Validation of the Thai version of the International Consultation on Incontinence Questionnaire-Female Lower Urinary Tract Symptoms (ICIQ-FLUTS).

INTRODUCTION AND HYPOTHESIS: To provide a validated Thai language version of the International Consultation on Incontinence Questionnaire-Female Lower Urinary Tract Symptoms (ICIQ-FLUTS) following a standardized procedure and to evaluate its psychometric properties. METHODS: After IRB approval, the English ICIQ-FLUTS was translated into Thai according to the cross-cultural adaptation process for patient-reported outcome measures. The psychometric properties of the final version of the Thai ICIQ-FLUTS were tested for content validity, internal consistency, construct validity, and test-retest reliability. Patients attending an urogynecology clinic and women from two communities were recruited for this study. RESULTS: The final Thai version of the ICIQ-FLUTS was developed and assessed by a panel of clinicians fluent in both languages including the content expert. Women with and without female lower urinary tract symptoms (FLUTS), in whom the translation was pretested, agreed that the final version made sense and was understandable. Among the 288 women who received the questionnaires, 283 (142 attending the clinic and 141 living in the communities) returned the completed questionnaire. The overall internal consistency of the Thai-version questionnaire was high, with a Cronbach's alpha score of 0.849. Symptom scores for filling, voiding, and incontinence in patients attending the clinic were significantly higher than in individuals from the community (p < 0.001). The correlation coefficients between the test and retest among 136 participants for symptoms of filling, voiding, and incontinence were 0.925, 0.769, and 0.921, respectively (p < 0.05). CONCLUSIONS: The Thai ICIQ-FLUTS contained satisfactory content and exhibited construct validity, internal consistency, and test-retest reliability. It is equivalent to the original English version and will be a valuable tool for assessing LUTS in Thai-speaking women.

Reliability of a Thai version of the International Prostate Symptom Score (IPSS) for the Thai population.

OBJECTIVE: To develop and test the reliability of a Thai version of the International Prostate Symptom Score (IPSS-Th). MATERIAL AND METHOD: A Thai version of the International Prostate Symptom Score (IPSS-Th) was developed after conducting many steps. The original English version of the International Prostate Symptom Score (IPSS) was translated into Thai by three urologists working independently. After having compared the original English version with various translations, the final Thai version was obtained. Fifty Thai males possessing a good understanding of both English and Thai were asked to complete the Thai version of the IPSS. Two weeks later, they were asked to complete the English version of the IPSS. Internal consistency was assessed using Cronbach's alpha. Next, 118 Thai males were tested using the Thai version of the IPSS and retested after two weeks. As such, the reliability of the Thai version of the IPSS was evaluated using the test-retest method. RESULTS: For the Thai IPSS version, Cronbach's alpha was 0.77 and the English version of the IPSS was 0.88. The test-retest reliability was 0.96. CONCLUSION: The Thai version of the IPSS was found to be reliable and should be a useful tool for patient assessment, follow-up, and research in the population of Thai-speaking patients.

Invariance and convergent and discriminant validity between mothers' and fathers' ratings of oppositional defiant disorder toward adults, ADHD-HI, ADHD-IN, and academic competence factors within Brazilian, Thai, and American children.

Confirmatory factor analysis was used to test the invariance of an oppositional defiant disorder toward adults, attention-deficit/hyperactivity disorder-hyperactivity/impulsivity, attention-deficit/hyperactivity disorder-inattention, and an Academic Competence factor model between mothers' and fathers' ratings within Brazilian (n = 894), Thai (n = 2,075), and American (n = 817) children with the Child and Adolescent Disruptive Behavior Inventory (G. L. Burns, T. Taylor, & J. Rusby, 2001a, 2001b). The results showed invariance of item loadings, intercepts, and residuals, as well as factor variances, covariances, and means between mothers' and fathers' ratings within each sample. Convergent and discriminant validity was also observed for the between-parent factor correlations, thus providing additional support for the construct validity of the Child and Adolescent Disruptive Behavior Inventory. The confirmatory factor analysis invariance procedure provides a much better way to examine between-source ratings of behavior problems in children than do the simple correlation and raw discrepancy score procedures.

Cross-cultural validation and inter-rater reliability of the Personal and Social Performance scale, Thai version.

OBJECTIVE: To cross-culturally validate and examine the inter-rater reliability of the Personal and Social Performance scale (PSP), Thai version (Thai-PSP). MATERIAL AND METHOD: The authors translated, back translated, and conducted a panel review on the source, translated, and back translated version of the PSP. After nine psychiatrists, who were new to the PSP or the Thai-PSP had received a three-hour session of training, they jointly watched four tape-recorded interviews and used the Thai-PSP for independent rating of the patients' functioning. RESULTS: The score ranges for items 1 (socially useful activities), 2 (personal/social relationships), and 3 (self-care) were between 0 (absent) and 4 (severe). The score range was between 0 (absent) and 3 (marked) for item 4 (disturbing/aggressive behavior). The total scores of four patients were rated between 2 (21-30 points) and 8 (81-90 points). The intraclass correlation coefficients (95% confidence intervals) of each item and total score were as follows: 0.63 (0.28-0.96) for item 1, 0.75 (0.42-0.98) for item 2, 0.69 (0.35-0.97) for item 3, 0.52 (0.17-0.94) for item 4, and 0.75 (0.41-0.98) for the total score. CONCLUSION: The results of the present study confirm the reliability of PSP and Thai-PSP as well as the ease of training.

Reliability and validity of the Thai version of the Health of the Nation Outcome Scales (hoNOS).

BACKGROUND: Measurement in psychiatric services is important for the development of a psychiatric tool for budget allocation. OBJECTIVE: To translate the Health of the Nation Outcome Scales (HoNOS) into Thai and to assess its psychometric properties. MATERIAL AND METHOD: The HoNOS was translated into Thai, by using the standard of "forward-backward" translation procedure. Two psychiatric nurses interviewed subjects together but independently rated their scores. The subjects were 23 acute inpatients and 23 sub-acute inpatients. The reliability and validity was assessed. RESULTS: The Cronbach's alpha coefficient of the Thai HoNOS was 0.68. It had a high correlation (r > 0.80) with the Brief Psychiatric Rating Scale (BPRS), the Global Assessment of Functioning (GAF) and the Clinical Global Impression (CGI). It suggested high concurrent validity. It had a satisfactory power (p < 0.05) in discriminating overall clinical outcomes between acute and sub-acute psychiatric inpatients. CONCLUSION: The Thai HoNOS fulfils the requirements of a psychiatric outcome scale for routine use in inpatient service.

Factors influencing health-related quality of life in chronic liver disease.

AIM: To investigate the factors contributing to health-related quality of life (HRQL) in chronic liver disease (CLD). METHODS: Patients with CLD and age- and sex-matched normal subjects performed the validated Thai versions of the short-form 36 (SF-36) by health survey and chronic liver disease questionnaire (CLDQ). Stepwise multiple regression analysis was used to assess the impact of disease severity, demography, causes of CLD, socioeconomic factors, and self-rating health perception on HRQL. RESULTS: Two-hundred and fifty patients with CLD and fifty normal subjects were enrolled into the study. Mean age and the numbers of low educated, unemployed, blue-collar career and poor health perception increased significantly from chronic hepatitis to Child's Classes A to B to C. Advanced stage of CLD was related to deterioration of HRQL. Increasing age and female reduced physical health area. Low socioeconomic factors and financial burden affected multiple areas of HRQL. In overall, the positive impact of self-rating health perception on HRQL was consistently showed. CONCLUSION: Advanced stages of chronic liver disease, old age, female sex, low socioeconomic status and financial burden are important factors reducing HRQL. Good health perception improves HRQL regardless of stages of liver disease.

Chronic liver disease questionnaire: translation and validation in Thais.

AIM: Quality of life (QOL) is a concept that incorporates many aspects of life beyond "health". The chronic liver disease questionnaire (CLDQ) was developed to evaluate the impact of chronic liver diseases (CLD) on QOL. The objectives of this study were to translate and validate a liver specific questionnaire, the CLDQ. METHODS: The CLDQ was formally translated from the original version to Thai language with permission. The translation process included forward translation, back translation, cross-cultural adaptation and a pretest. Reliability and validity of the translated version was examined in CLD patients. Enrolled subjects included CLD and normal subjects with age- and sex-matched. Collected data were demography, physical findings and biochemical tests. All subjects were asked to complete the translated versions of CLDQ and SF-36, which was previously validated. Cronbach's alpha and test-retest were performed for reliability analysis. One-way Anova or non-parametric method was used to determine discriminant validity. Spearman's rank correlation was used to assess convergent validity. P -value <0.05 was considered statistically significant. RESULTS: A total of 200 subjects were recruited into the study, with 150 CLD and 50 normal subjects. Mean ages (SD) were 47.3(11.7) and 49.1(8.5) years, respectively. The number of chronic hepatitis: cirrhosis was 76:74, and the ratio of cirrhotic patients classified as Child A:B:C was 37(50%): 26(35%): 11(15%). Cronbach's alpha of the overall CLDQ scores was 0.96 and of all domains were higher than 0.93. Item-total correlation was >0.45. Test-retest reliability done at 1 to 4 wk apart was 0.88 for the average CLDQ score and from 0.68 to 0.90 for domain scores. The CLDQ was found to have discriminant validity. The highest scores of CLDQ domains were in the normal group, scores were lower in the compensated group and lowest in the decompensated group. The significant correlation between domains of the CLDQ and SF-36 was found. The average CLDQ score was strongly correlated with the general health domain of SF-36. (P=0.69: P=0.01). CONCLUSION: The translated CLDQ is valid and applicable in Thais with CLD. CLDQ reveals that QOL in these patients is lower than that in normal population. QOL is more impaired in advanced stage of CLD.

The European Organization for Research and Treatment of Cancer quality of life questionnaire: translation and reliability study of the Thai version.

In the past decade, increasing attention is being given to more systematic and quantitative ways to evaluate explicitly the impact of disease and medical interventions on quality of life (QOL). Pertaining to the field of oncology, two relatively new instruments--the European Organization for Research and Treatment of Cancer (EORTC) QLQ-C30 and the FACT-G, have received growing attention and appear to be excellent QOL instruments in clinical settings. FACT-G has already been validated and has been used in Thailand. Thus in the present study, the English version of the EORTC quality of life questionnaire (QLQ-C30) was translated into Thai and the initial descriptive statistic and scale reliability were reported. Mean score in this study of 75 cancer patients was comparable with the original report. Cronbach's alpha coefficient for multi-item scales range from 0.64 to 0.89. The validity of this translated version will be reported at a later date. The initial findings of the present study indicate that the Thai version of the EORTC QLQ-C30 is reliable. A validating process of this version is in progress with active patients accrual ongoing at present.

A multitrait (ADHD-IN, ADHD-HI, ODD toward adults, academic and social competence) by multisource (mothers and fathers) evaluation of the invariance and convergent/discriminant validity of the Child and Adolescent Disruptive Behavior Inventory with Thai adolescents.

Confirmatory factor analysis was used with a multitrait (attention-deficit/hyperactivity disorder-inattention, attention-deficit/hyperactivity disorder-hyperactivity/impulsivity, oppositional defiant disorder toward adults, academic competence, and social competence) by multisource (mothers and fathers) matrix to test the invariance and convergent/discriminant validity of the 5-factor model between mothers' and fathers' ratings of Thai adolescents (Year 1: n = 872; Year 2: n = 903; Year 3: n = 700; Year 4: n = 984) with the Child and Adolescent Disruptive Behavior Inventory (G. L. Burns, T. Taylor, & J. Rusby, 2001). The results showed equality of like-item loadings, intercepts, and residuals, as well as like-factor variances, covariances, and means between mothers' and fathers' ratings within each of the 4 yearly samples. In addition, the between-parent factor correlations showed convergent and discriminant validity with the within-parent factor correlations, showing discriminant validity for each year as well. These results for Thai adolescents and similar results (G. L. Burns et al., 2008) for mothers' and fathers' ratings of Brazilian, Thai, and American children provide broader support for the construct validity of the scale. The confirmatory factor analysis invariance and convergent/discriminant validity procedure with multiple sources is considered to provide a much more sophisticated procedure to evaluate the construct validity of attention-deficit/hyperactivity disorder and oppositional defiant disorder rating scales than a single-source approach.

The European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30): validation study of the Thai version.

The objective of this study was to assess the psychometric properties of the Thai version of the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) version 3.0. The questionnaire was completed by 310 cancer patients during their follow-up at 2 teaching hospital oncology clinics. About 70% of participants had advanced stage of cancer and 72% had been receiving chemotherapy. Cronbach's alpha coefficients of the six scales were above 0.7, except for cognitive and social function scales. All test-retest reliability coefficients were high. Multi trait scaling analysis showed that all item-scale correlation coefficients met the standards of convergent and discriminant validity. Most scales and items could discriminate between subgroups of patients with different clinical status assessed with the Eastern Cooperative Oncology Group (ECOG) scale. The results suggested that the EORTC QLQ-C30 and the Functional Assessment of Cancer Therapy - General (FACT-G) measured different aspects of quality of life and should be independently used. Testing psychometric properties of the EORTC QLQ-C30 in heterogeneous diagnostic group yield similar results as found in homogeneous group. These results support that the EORTC QLQ-C30 (version 3.0) has proven to be a reliable and valid measure of the quality of life in Thai patients with various types of cancer.