Translation and validation of Vietnamese version of the Birth Satisfaction Scale-Revised (BSS-R).

BACKGROUND: The 10-item Birth Satisfaction Scale-Revised (BSS-R) is a quick and easy survey instrument recommended by the International Consortium for Health Outcome Measures as the tool of choice for measuring women's birth satisfaction. AIM: To translate and validate a Vietnamese-language version of the BSS-R. METHOD: A quantitative cross-sectional method was used to gather data post translation and back-translation of a Vietnamese version of the BSS-R (VN-BSS-R). Data collected were psychometrically evaluated using key indices of validity and reliability. PARTICIPANTS: Vietnamese women who were within one month postpartum of birth (N = 383) took part in the study. RESULTS: Findings illustrate that a two-factor model offered excellent psychometric properties. With the two-factor VN-BSS-R, five items loaded onto a subscale 'Positive birth experiences' and the other five onto a second subscale 'Negative birth experiences'. This two-factor model offered a fit to data (root mean square error of approximation [RMSEA] = 0.07, 90% confidence interval [CI] [0.05, 0.09], root square mean residual [RMSE] = 0.04 and comparative fit index [CFI] = 0.97). Mean scores for the exploratory factor analysis [EFA]-derived 'positive' and 'negative' sub-scales were 17.12 (SD 2.34) and 8.40 (SD 4.18) respectively. CONCLUSION: The translated and validated VN-BSS-R is a psychometrically robust tool for measuring birth satisfaction in Vietnamese postpartum women.The VN-BSS-R is available for use to measure experiences and perceptions of intrapartum care received by Vietnamese women.

Translation and validation of the Hungarian version of the Birth Satisfaction Scale-Revised (BSS-R).

BACKGROUND: Evidence relating maternal birth experience to a range of maternal and neonatal outcomes is increasingly compelling. Consequently valid and reliable self-report of birth experience from the mothers perspective is critical. AIM: The current study sought to translate and validate a Hungarian-language version of the Birth Satisfaction Scale-Revised (BSS-R). METHOD: Following forward and backwards translation into Hungarian, the Hungarian BSS-R (HU-BSS-R) was administered to women in a major Transylvanian hospital maternity unit within 72 h postpartum. Key psychometric characteristics were then examined in relation to factor structure, divergent and convergent validity, internal consistency, and known-groups discriminant validity. RESULTS: Two-hundred and thirty-two women completed the HU-BSS-R. Confirmatory factor analysis revealed the HU-BSS-R to offer an excellent fit to data for the established tri-dimensional measurement model. The HU-BSS-R was also found to offer excellent convergent and divergent validity and known-groups discriminant validity. No significant differences were observed between internal consistency observations between the current study and the original UK validation study. CONCLUSIONS: The HU-BSS-R is a valid and reliable translation of the original BSS-R, it has proved itself to have excellent psychometric properties and is suitable for use in the Hungarian maternity context.

Psychometric properties of a Saudi Arabian version of the Birth Satisfaction Scale-Revised (BSS-R).

Background: Maternal outcomes are closely associated with birth satisfaction, and the Birth Satisfaction Scale-Revised (BSS-R), a concise, multidimensional self-report measure, has undergone translation and validation internationally. However, research on birth satisfaction in Saudi Arabia is scarce. The absence of valid Arabic-language tools for the Saudi population may impede critical research on this topic, necessitating the translation and use of psychometrically sound instruments for measuring birth satisfaction in Saudi women. Objective: This study aimed to translate and evaluate the psychometric properties of the Saudi Arabian version of the BSS-R (SA-BSS-R). Methods: A total of 218 Saudi women participated in the study, and psychometric analysis of the translated SA-BSS-R involved confirmatory factor analysis, divergent validity analysis, and known-group discriminant validity assessment within a cross-sectional study design. Results: The three-factor BSS-R measurement model displayed poor fit, and internal consistency fell below the threshold value. Additionally, it was observed that women undergoing an episiotomy had significantly lower overall SA-BSS-R scores. Conclusion: The SA-BSS-R manifested atypical measurement properties in this population. Despite insightful observations related to episiotomy, the identified measurement shortcomings highlight the need for a more robust and culturally sensitive translation to enhance measurement characteristics.

Translation and validation of the Japanese version of the Birth Satisfaction Scale-Revised.

AIM: This study aimed to develop a Japanese version of the Birth Satisfaction Scale-Revised and evaluate its reliability and validity. METHODS: After translating the Birth Satisfaction Scale-Revised into Japanese, we conducted an Internet-based cross-sectional study with 445 Japanese-speaking women within 2 months of childbirth. Of these, 98 participated in the retest 1 month later. Data were analyzed using the COSMIN study design checklist for patient-reported outcome measurement instruments. Content validity was evaluated through cognitive debriefing during the translation process into Japanese. Confirmatory factor analysis was conducted to verify structural and cross-cultural validities. For hypothesis testing, we tested correlations with existing measures for convergent and divergent validities, and for known-group discriminant validity, we made comparisons between types of childbirth. Internal consistency was calculated using Cronbach's α, and test-retest reliability was evaluated using the intraclass correlation coefficient. RESULTS: For the Japanese-Birth Satisfaction Scale-Revised, the established three-factor model fit poorly, whereas the four-factor model fit better. Full metric invariance was observed in both the nulliparous and multiparous groups. Good convergent, divergent, and known-group discriminant validities and test-retest reliability were established. Internal consistency observations were suboptimal; however for vaginal childbirth, the Cronbach's α of the total score was .71. CONCLUSIONS: The Japanese-Birth Satisfaction Scale-Revised is a valid and reliable scale, with the exception of internal consistency that requires further investigation. If limited to vaginal childbirth, research, clinical applications, and international comparisons can be drawn.

Translation and validation of the Czech Republic version of the Birth Satisfaction Scale-Revised (BSS-R).

BACKGROUND: Satisfaction with the birth experience has been established to be critical for the wellbeing of the mother. The Birth Satisfaction Scale-Revised (BSS-R) is a brief and psychometrically robust multi-dimensional self-report tool designed to assess birth experience. The current investigation sought to translate and validate a Czech Republic version of the BSS-R (CZ-BSS-R). METHODS: Following translation psychometric assessment of the CZ-BSS-R was undertaken using a cross-sectional design. A between-subjects design was incorporated in order to evaluate known-groups validity evaluation of the translated measure. Four hundred and sixty-five Czech-speaking women within the Czech Republic took part in the study. Confirmatory factor analysis was undertaken and divergent and convergent validity and internal consistency characteristics also evaluated. RESULTS: The CZ-BSS-R was observed to have excellent psychometric properties and conceptually and measurement faithful to the original English-language measure. Consistent with previous investigations using the BSS-R significant differences were found in scores as a function of delivery type. CONCLUSIONS: The CZ-BSS-R is a valid, robust and reliable measure of birth experience and suitable for use with Czech-speaking women in the Czech Republic. The study highlighted that instrument and emergency Caesarean section were associated with a lower level of birth satisfaction compared to vaginal delivery.

Multidimensionality within the Edinburgh postnatal depression scale: application issues of specific structure.

OBJECTIVE AND BACKGROUND: The 10-item Edinburgh Postnatal Depression Scale (EPDS) is a widely-used screening measure for postnatal depression. Factor analysis studies have suggested an embedded sub-scale could be used for screening for anxiety disorders. The current investigation sought to replicate and extend a recent study supporting this assertion. METHODS: A cross-sectional design. EPDS data were collected at up to two years postpartum. Confirmatory factor analysis, correlational and distributional characteristics of the measure were examined. Participants were a large sample (N = 985) of postpartum women in the Czech Republic. RESULTS: Factor structure findings substantially replicated the models evaluated by Della Vedova et al. (2022). Bifactor models, however, offered a better fit to data. A general factor of depression explained most of the variance in data in most models compared to embedded sub-scales across models. CONCLUSION: The model proposed by Della Vedova et al. (2022) offered an excellent fit to data. However, the findings from the bifactor modelling suggest the dominance of a general factor of depression which indicates the potential application of an embedded anxiety sub-scale for screening may be overstated.

Practitioner perspectives on the use of selected fear of childbirth screening tools within a clinical context.

Fear of childbirth (FOC), or tokophobia, can influence several medical and obstetric variables, and is a significant predictor of maternal and mental health outcomes and birth experiences. Current practice in the UK does not include initial screening for tokophobia, rather, assessment and support occur under extreme circumstances e.g. maternal requests for caesarean sections or pregnancy termination requests in order to avoid childbirth. Moreover, while there are several candidate outcome measures for FOC, none have been evaluated in terms of their perceived suitability by specialist practitioners within perinatal healthcare pathways. The present study explores the perceived barriers and facilitators reported by health professionals working within the maternity and mental health services for the use of FOC candidate outcome measures. Evaluated measures included the Fear of Birth Scale, the Oxford Worries about Labour Scale, The Wijma Delivery Expectancy Scale, the Slade-Pais Expectations of Childbirth Scale the Tokophobia Severity Scale. The Tokophobia Severity Scale, followed by the Slade-Pais Expectations of Childbirth Scales were the most favourable scales selected for use according to clinicians. The identification of preferred scales and how they can be used in the local maternity system is a step towards the application of these consistently in clinical practice, to aid in the identification and assessment of FOC. The use of the correct tool at each stage of contact with the local maternity system will improve clinician confidence in the identification of FOC and facilitate the efficient implementation of treatment and support through the development of pathways of care.

Translation and validation of the Swedish version of the Birth Satisfaction Scale-Revised (BSS-R).

BACKGROUND: Optimizing women's childbirth experience is essential for development of quality mother infant relationships. The Birth Satisfaction Scale-Revised (BSS-R) can be used to measure birth satisfaction. AIM: The current investigation sought to translate and validate a Swedish version of the BSS-R. METHOD: Following translation, a comprehensive psychometric validation of the Swedish-BSS-R (SW-BSS-R) was carried out using a multi-model, cross-sectional, between- and within-subjects design. PARTICIPANTS: A total of 619 Swedish-speaking women participated, from which 591 completed SW-BSS-R and were eligible for analysis. DATA ANALYSIS: Discriminant, convergent, divergent and predictive validity, internal consistency, test-retest reliability, and factor structure were evaluated. RESULTS: The SW-BSS-R was found to have excellent psychometric properties and hence is a valid translation of the original UK(English)-BSS-R. Important insights into relationships between mode of birth, post-traumatic stress disorder (PTSD), and postnatal depression (PND) were observed. CONCLUSIONS AND IMPLICATIONS FOR PRACTICE: The SW-BSS-R is a psychometrically valid translation of the original BSS-R and is suitable for use in a Swedish-speaking population of women. The study has also highlighted important dynamics between birth satisfaction and areas of significant clinical concern (i.e., mode of birth, PTSD and PND) in Sweden.

Exploring the psychometric properties of the professional issues in maternal mental health scale (PIMMHS) in a Chinese population.

BACKGROUND: The public health and economic implications of perinatal mental health problems are well documented. Maternity clinicians are ideally placed to effectively identify women at risk and facilitate early intervention. However, in China as globally a number of issues are implicated in a failure to recognise and treat. AIM: The present study sought to develop and evaluate the Chinese version 'professional issues in maternal mental health' scale (PIMMHS), explore its psychometric properties and potential application. METHODS: A cross-sectional design and instrument translation and evaluation approach was taken to investigate the psychometric properties of the PIMMHS in a Chinese population. A total of 598 obstetricians, obstetric nurses, and midwives participated in this study from 26 hospitals across China. FINDINGS: The Chinese PIMMHS was not a good fit to the original two factor model. The emotion/communication subscale yielded an excellent fit to the data according to all fit indices, offering compelling evidence for a single factor solution. The training (PIMMHS: Training), proved problematic throughout the analysis with divergent validity for the training subscale also being poor with a concomitant impact on the total scale performance. The performance of this subscale may be related to the nature of medical training and PMH. CONCLUSION: The Chinese PIMMHS comprises a unidimensional scale of emotion/ communication, which is simple and may provide insight into the emotional burden of providing PMH care, with the potential to mitigate that burden. Further development and investigation of the training sub-scale could be of value.

Translation and validation of the Hindi-Indian version of the Birth Satisfaction Scale-Revised.

AIM: Critical to maternal outcome and development of a healthy and relationship between mother and baby, is the woman's perception of her birth experience. The Birth Satisfaction Scale-Revised (BSS-R) has been demonstrated to be psychometrically robust, easily administered, and scored self-report measure of birth experience. Aim of the study was to translate the UK-BSS-R into Hindi, collect data, and psychometrically validate an Indian (Hindi)-BSS-R. METHODS: Psychometric assessment of the Indian (Hindi)-BSS-R was undertaken following translation using a cross-sectional design. Evaluation of known-groups validity was undertaken using an embedded between-subjects component. Data were collected from (n = 312) postnatal Hindi speaking women in India. Measurement characteristics were assessed using confirmatory factor analysis, divergent validity and internal consistency analysis. RESULTS: The measurement properties of the Indian (Hindi)-BSS-R were observed to be equivocal, with the established tri-dimensional measurement model not achieving best fit to data. Instead, an alternative two-factor model offered an excellent fit to data. Significant differences were observed between Indian (Hindi)-BSS-R scores and family type and gestation term status, which highlights the relevance of these contextual aspects to the Indian birth experience. Internal consistency was observed to be low on some sub-scales, indicating the potential need for future revision. CONCLUSIONS: The Indian (Hindi)-BSS-R is a measure of birth experience, which accepting some measurement caveats, is acceptable for use with Hindi speaking women in India. Further research is required to determine if modification of some of the items is required to improve internal consistency.

Translation and validation of the Dutch version of the Birth Satisfaction Scale-Revised (BSS-R).

BACKGROUND: Recent observations suggest birth satisfaction may be significantly associated with postpartum post-traumatic stress disorder (PP-PTSD). The Birth Satisfaction Scale-Revised (BSS-R) is increasingly used Internationally as a short, valid and reliable multi-dimensional measure of birth experience. The current study sought to develop a Dutch version of the BSS-R (D-BSS-R) for clinical and research application in the Netherlands. METHODS: Post-translation, a cross-sectional design with an embedded between-subjects component was used to evaluate key indices of validity and reliability of the D-BSS-R in a purposive sampled cohort of 244 Dutch-speaking women in the Netherlands. Confirmatory factor analysis, divergent, convergent and known-groups discriminant validity were evaluated as was the internal consistency of the measure. RESULTS: The D-BSS-R was found to be a generally valid and reliable measure of birth experience with the key measurement characteristics of the original English-language measure transferring well to the Dutch context. Statistically significant negative correlations were observed between all D-BSS-R sub-scales and a validated measure of PTSD. CONCLUSIONS: The D-BSS-R represents a valid and reliable measure of birth experience suitable and appropriate for use in the Netherlands. The study corroborates previous suggestions of linkage between birth satisfaction and PP-PTSD using a robust and diagnostically valid measure of trauma.

A systematic review of disease related stigmatization in patients living with prostate cancer.

BACKGROUND: Prostate cancer has been shown to be susceptible to significant stigmatisation, because to a large extent it is concealable, it has potentially embarrassing sexual symptoms and has significant impact on the psychosocial functioning. METHODS: This review included studies that focused on qualitative and/or quantitative data, where the study outcome was prostate cancer and included a measure of stigmatization. Electronic databases (CINAHL, Medline, PubMed, PsycInfo, Cochrane Library, PROSPERO, and the Joanna Briggs Institute) and one database for grey literature Opengrey.eu, were screened. We used thematic analysis, with narrative synthesis to analyse these data. We assessed risk of bias in the included studies using the RoBANS. RESULTS: In total, 18 studies met review inclusion criteria, incorporating a total of 2295 participants. All studies recruited participants with prostate cancer, however four studies recruited participants with other cancers such as breast cancer and lung cancer. Of the 18 studies, 11 studies evaluated perceived or felt stigma; four studies evaluated internalised or self-stigma; three studies evaluated more than one stigma domain. DISCUSSION: We found that patients living with prostate cancer encounter stigmatisation that relate to perception, internalisation, and discrimination experiences. We also identified several significant gaps related to the understanding of prostate cancer stigmatization, which provides an opportunity for future research to address these important public health issues. REGISTRATION: This systematic review protocol is registered with PROSPERO, the international prospective register of systematic reviews in health and social care. Registration number: CRD42020177312.

Simplification or simulation: Power calculation in clinical trials.

BACKGROUND AND OBJECTIVES: A justifiable sample size is essential at trial design stage. Generally this task is completed by forming the main research question into a statistical procedure and then implementing the published formulae or software packages. When these standard statistical formulae/software packages become unavailable for studies with complex statistical procedures, some statisticians choose to fill this gap by assuming an alternative simplified sample size calculation. Monte Carlo simulations can also be deployed, particularly for complex trials. However, it is still unclear on how to determine the appropriate approach under certain practical scenarios. METHODS: We adopted real clinical trials as examples and investigated on simplification and simulation-based sample size calculation approaches. RESULTS: Compared to simplified sample size calculation, the simulation approach can better address the non-ignorable impact of baseline/follow-up outcome correlation on study power. For studies with multiple endpoints and multiple co-primary endpoints, the sample sizes calculated by simplification approach should be scrutinized. CONCLUSIONS: Directly using the simplification approach for sample size calculation should be restricted. We recommend to utilize the simulation approach, particularly for complex trials, at least as a sensitivity checking and a useful triangulation to the simplification approach outlined.

Spanish validation and factor structure of the Prenatal Distress Questionnaire Revised (NuPDQ).

BACKGROUND: Due to an absence of maternal stress being measured in routine prenatal care by clinicians, prenatal stress has become a serious problem which is associated with poorer obstetric outcomes, as well as worse maternal and infant health. For that reason, the aim of this study was the translation, validation and adaptation of Prenatal Distress Questionnaire Revised (NuPDQ) in a Spanish sample. METHODS: Three-hundred and seventy-one pregnant women were assessed using the NuPDQ, the Prenatal Distress Questionnaire, Perceived Stress Scale and the Connor-Davidson Resilience Scale. The NuPDQ was translated into Spanish by the backtranslation method and administered to participants. RESULTS: A confirmatory factor analysis revealed the established unidimensional structure to be a poor fit to data with the Spanish version. An exploratory factor analysis suggested a five-factor structure with 14 items. The instrument had good reliability, convergent and discriminant validity psychometric properties. CONCLUSIONS: The five-factor 14-item NuPDQ is useful to assess pregnancy-specific stress in Spanish pregnant women. It may be appropriate to use this instrument in order to identify pregnant women with high pregnancy-specific stress to try to prevent negative consequences derived from those high levels.

The relationship between birth satisfaction, posttraumatic stress disorder and postnatal depression symptoms in Croatian women.

Studies show that a woman's dissatisfaction with her birth experience may affect her well-being. This study aimed to examine: (1) the birth satisfaction in Croatian women and compare it with UK normative data; (2) the association of different dimensions of birth satisfaction with posttraumatic stress disorder (PTSD) and depressive symptoms. In a cross-sectional online study, 603 postnatal Croatian women completed the Birth Satisfaction Scale-Revised (subscales: Stress experienced during labour (SL), Women's personal attributes (WA), and Quality of care provision (QC)); City Birth Trauma Scale (subscales: Birth-related symptoms and General symptoms); and Edinburgh Postnatal Depression Scale. Subscale and total scale scores were calculated. Path analysis tested the model of three aspects of birth satisfaction effect on PTSD dimensions and depressive symptoms. The average birth satisfaction score was significantly lower compared to the UK data on the total scale and all three subscale scores. Path analysis revealed that all three dimensions of birth satisfaction (SL, WA, and QC) had an effect on Birth-related symptoms. However, only Women's personal attributes (i.e., feeling anxiety or being in control during childbirth) had an effect on General symptoms and depressive symptoms, as well. Different aspects of birth satisfaction are important for maternal mental health following childbirth.

The Tokophobia Severity Scale (TSS): measurement model, power and sample size considerations.

OBJECTIVE: To examine the measurement model of the Tokophobia Severity Scale and consider issues of statistical power and sample size from the original instrument development study. BACKGROUND: Fear of childbirth (FoC) and tokophobia represents an area of increasing concern within perinatal mental health research and clinical practice. Existing measures of the FoC have been criticised due to either measurement inconsistencies, difficulties in scoring or practical clinical application. Attempting to address these limitations, researchers developed the Tokophobia Severity Scale (TSS). A fundamental assumption underpinning the use of the TSS is unidimensionality, however this assertion may have been based on sub-optimal sample size and approach taken to factor structure determination. METHOD: Parallel analysis (PA), principal components analysis (PCA), exploratory factor analysis (EFA), power analysis and sample size calculation using a reconstruction of the original dataset from published summary data. RESULTS: Following replication of the original PCA, a three-factor model was found to offer a significantly better fit to data than a unidimensional model. Power analysis suggested the original study was underpowered. CONCLUSION: The TSS remains a promising tool but assumptions regarding its measurement model are based on an inadequate sample size. Sample sizes for a sufficiently powered study indicated.

Alcohol Consumption during the COVID-19 Lockdown Period: Predictors of At-Risk Drinking at Different AUDIT-C Cut-Off Thresholds.

During the COVID-19 pandemic, alcohol consumption was largely confined to drinking in the home. There has been little research examining variables associated with risk in home drinking. The study employed an online survey of (n = 1128) individuals who had been recruited for their face recognition skills (n = 838, 70.9% females, mean age 45.05 (12.3 SD)). The main dependent variables were three different AUDIT-C cut-off scores for at-risk drinking: (a) 5 for both genders as recommended by Public Health England, (b) 7 for females and 8 for males (cut-off for students and young people) and (c) 8 for both genders (individuals seeking online help for their drinking). Among the independent variables were gender and age, motivations for home drinking using the Home Drinking Assessment Scale (HDAS), purchasing patterns, context of drinking and health and wellbeing. The predictors following hierarchical logistic regressions were for (a) purchasing alcohol online or at a supermarket and emotional HDAS scores, (b) purchasing alcohol online or at a supermarket and for parties, drinking alone and with other members of the household and emotional and practical reason HDAS scores, (c) as for b with the addition that men were more likely to be at-risk drinkers. At-risk drinking in the pandemic was explained by motivational reasons, purchasing patterns and situational factors.

Exploratory study into the relationship between the symptoms of chronic fatigue syndrome (CFS)/myalgic encephalomyelitis (ME) and fibromyalgia (FM) using a quasiexperimental design.

OBJECTIVE: To explore the relationship between symptoms of chronic fatigue syndrome (CFS)/myalgic encephalomyelitis (ME) and fibromyalgia (FM). The hypothesis predicated that there would be no significant differences between the group's symptom experience. DESIGN: A quasiexperimental design. Structural equation modelling (SEM) and invariance testing. PARTICIPANTS: Males (M) and females (F) >16 with a confirmed diagnosis of CFS/ME or FM by a general practitioner or specialist. CFS/ME (n=101, F: n=86, M: n=15, mean (M) age M=45.5 years). FM (n=107, F: n=95, M: n=12, M=47.2 years). OUTCOME MEASURES: Diagnostic criteria: the American Centers for Disease Control and Prevention (CDC) for CFS/ME and the American College of Rheumatology (ACR) criteria for FM. Additional symptom questionnaires measuring: pain, sleep quality, fatigue, quality of life, anxiety and depression, locus of control and self-esteem. RESULTS: Invariance was confirmed with the exception of the American CDC Symptom Inventory, Fibromyalgia Impact Questionnaire and Hospital Anxiety and Depression Scale (p<0.05) based on five questions. Consequently, it was erroneous to conclude differences. Therefore, the Syndrome Model was created. SEM could not have tested the ACR previously, as it comprised a single data point. Thus, it was combined with these three questionnaires, increasing the data points, to create this new measurable model. Results confirmed no significant differences between groups (p=0.07 (p<0.05)). CONCLUSION: Participants responded in a similar manner to the questionnaire, confirming the same symptom experience. It is important to consider this in context with differing criteria and management guidelines, as this may influence diagnosis and the trajectory of patient's management. With the biomedical cause currently unclear, it is the symptom experience and the impact on quality of life that is important. These findings are meaningful for patients, clinicians and policy development and support the requirement for future research.

Chronic fatigue syndrome (CFS)/Myalgic Encephalomyelitis (ME) and Fibromyalgia (FM): the foundation of a relationship.

INTRODUCTION: Chronic fatigue syndrome (CFS)/Myalgic Encephalomyelitis (ME) and fibromyalgia (FM) are both debilitating syndromes with complex polysymptomatology. Early research infers that a relationship may exist even though the diagnosis provided may influence the management trajectory. In the absence of a diagnostic test and treatment, this study aims to confirm the symptoms and their severity, which may infer a relationship and influence future research. METHOD: A quasi-experimental design was utilised, using Internet-based self-assessment questionnaires focusing on nine symptom areas: criteria, pain, sleep, fatigue, anxiety and depression, health-related quality of life, self-esteem and locus of control. The questionnaires used for data collection are as follows: the American Centre for Disease Control and Prevention Symptom Inventory for CFS/ME (American CDC Symptom Inventory); the American College of Rheumatology (ACR) Criteria for FM; Fibromyalgia Impact Questionnaire (FIQ); McGill Pain Questionnaire (MPQ); Multidimensional Fatigue Inventory (MFI); Pittsburgh Sleep Quality Index (PSQI); Health-Related Quality of Life SF-36 V2 (HRQoL SF-36 V2); Hospital Anxiety and Depression Scale (HADS); Multidimensional Health Locus of Control (MHLOC) and the Rosenberg Self-Esteem Scale (RSES). SETTING AND PARTICIPANTS: Participants were recruited from two distinct community groups, namely CFS/ME (n = 101) and FM (n = 107). Participants were male and female aged 17 (CFS/ME mean age 45.5 years; FM mean age 47.2 years). RESULTS: All participants in the CFS/ME and FM groups satisfied the requirements of their individual criteria. Results confirmed that both groups experienced the debilitating symptoms measured, with the exception of anxiety and depression, impacting on their quality of life. Results suggest a relationship between CFS/ME and FM, indicating the requirement for future research.

The Birth Satisfaction Scale-Revised Indicator (BSS-RI): a validation study in Iranian mothers.

OBJECTIVE: Birth Satisfaction Scale-Revised Indicator (BSS-RI) is a short selfreport instrument designed to measure satisfaction of the childbearing women's experiences of labour and its outcomes. The aim of this study was to examine the reliability and validity of the Persian version of BSS-RI in Iranian mothers. METHODS: This cross-sectional study was conducted on 396 mothers in Tehran, Iran, between July and September 2017. The mothers were administered the BSS-RI, and a demographic questionnaire. Internal consistency of the BSS-RI was examined with Cronbach's alpha, construct validity was evaluated via exploratory factor analysis (EFA), and divergent validity was examined by correlating the BSS-RI with gestational age. RESULTS: The EFA results demonstrated a two-factor structure corresponding to the Stress of Childbearing and Quality of Care domains of the structure proposed by provider. The Cronbach's alpha for Stress of Childbearing and Quality of Care subscales and total BSS-RI were 0.665, 0.847, and 0.563, respectively. The mean of BSS-RI total score was 6.16 (SD = 2.60), and the Stress of Childbearing and Quality of Care subscales were 2.71 (SD = 2.39), and 3.45 (SD = 1.11), respectively. The BSS-RI showed no significant correlation with the gestational age, confirming divergent validity. CONCLUSION: Like the original English version, the Persian version of the BSS-RI is a reliable and valid instrument for measuring birth satisfaction in Iranian mothers. It can also be used as short and easy to administer tool for assessment of birth satisfaction in large sample survey research.