Phases of female sexual response cycle among Malaysian women with infertility: a factor analysis study

A psychometric evaluation of the Female Sexual Function Index in women treated for breast cancer

Background

We aimed to determine the psychometric properties and factor structure of the 19‐item Female Sexual Function Index (FSFI) in 132 sexually active women previously treated for breast cancer.

Methods

Confirmatory factor analysis explored three models: (a) second‐order six‐factor, (b) six‐factor, and (c) five‐factor models combining the desire and arousal subscales.

Results

Results revealed excellent reliability for the total score (Cronbach's α = 0.94), and domain scores (all Cronbach's αs > 0.90), and good convergent and discriminant validity. The six‐factor model provided the best fit of the models assessed, but a marginal overall fit (Tucker–Lewis index = 0.91, comparative fit index = 0.93, root mean square error of approximation = 0.09). Exploratory factor analyses (EFA) supported a four‐factor structure, revealing an arousal/orgasm factor alongside the original pain, lubrication, and satisfaction domains.

Conclusion

The arousal/orgasm factor suggests a “sexual response” construct, potentially arising from an underlying latent factor involving physical and mental stimulation in conceptualizations of arousal and orgasm in women treated for breast cancer. Finally, the EFA failed to capture an underlying desire factor, potentially due to measurement error associated with the small number of items (two) in this domain. Despite evidence that the FSFI has sound psychometric properties, our results suggest that the current conceptualizations of the FSFI might not accurately represent sexual functioning in women previously treated for breast cancer. Further research is required to elucidate the factors that influence desire, arousal, and orgasm in sexually active women in this population, and the reasons underlying sexual inactivity. Practical and theoretical implications for FSFI use in this population are discussed.

Validation of the Vietnamese Translation Version of the Female Sexual Function Index in Infertile Patients

INTRODUCTION

The Female Sexual Function Index (FSFI) is regarded as a self-administered screening questionnaire for assessing the presence of any type of sexual dysfunction.

AIM

The aim of this study was to investigate the psychometric properties of the Vietnamese translation version of the Female Sexual Function Index (VN-FSFI) in a sample of infertile Vietnamese women.

METHODS

An existing Vietnamese translated-FSFI version was used as a first-step approach to back-translate into English. Based on the comparison of the original English version and the back-translation script, a modified version of the FSFI was revised. This version was evaluated for "content validity" by a panel of 3 experts and for "face validity" by a pilot study that was based on its results to refine to reach the last Vietnamese FSFI version (VN-FSFI version). A cross-sectional survey to investigate psychometric reliability and validity of the last VN-FSFI version was conducted with 271 infertile Vietnamese women from January 2017 through February 2018, at a hospital located in a central region of Vietnam. Construct validity was evaluated by principal component analysis using varimax rotation and factor analysis. Reliability studies on internal consistency (Cronbach's alpha coefficient, domain inter-correlations, and domain-total correlations) and on test-retest (Intraclass correlation coefficient).

MAIN OUTCOME MEASURE

Construct validity and the reliability of the VN-FSFI version.

RESULTS

Based on principal component analysis, a 5-factor model was established, consisting of arousal/orgasm, satisfaction, pain, lubrication, and desire that explained 72.32% of the total variance. The factorial structure supported to 6 retrieved domains that corresponded to the original version. The Cronbach's alpha coefficients were 0.92 for the total scale and 0.72-0.89 for the domains. Domain inter-correlations ranged from 0.36-0.73 and domain-total correlation coefficients ranged from 0.67-0.84. Test-retest correlation coefficients over 2-4 weeks were 0.97 (P < .001) for the total scale and 0.84-0.96 for the domains.

CONCLUSION

With good psychometric properties, which are almost similar to the original English version, this Vietnamese translation version of the Female Sexual Function Index (VN-FSFI version) was proved to be a valid and reliable instrument to measure multidimensional aspects of sexual function in infertile Vietnamese women. Ho TTT, Le MT, Truong QV, et al. Validation of the Vietnamese Translation Version of the Female Sexual Function Index in Infertile Patients. Sex Med 2019;8:57-64.

The Female Sexual Function Index (FSFI)-A Systematic Review of Measurement Properties

INTRODUCTION

The Female Sexual Function Index (FSFI) is a patient-reported outcome measure measuring female sexual dysfunction. The FSFI-19 was developed with 6 theoretical subscales in 2000. In 2010, a shortened version became available (FSFI-6).

AIM

To investigate the measurement properties of the FSFI-19 and FSFI-6.

METHODS

A systematic search was performed of Embase, Medline, and Web of Science for studies that investigated measurement properties of the FSFI-19 or FSFI-6 up to April 2018. Data were extracted and analyzed according to COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN) guidelines. Evidence was categorized into sufficient, insufficient, inconsistent, or indeterminate, and quality of evidence as very high, high, moderate, or low.

MAIN OUTCOME MEASURES

The Main Outcome Measure is the evidence of a measurement property, and the quality of evidence based on the COSMIN guidelines.

RESULTS

83 studies were included. Concerning the FSFI-19, the evidence for internal consistency was sufficient and of moderate quality. The evidence for reliability was sufficient but of low quality. The evidence for criterion validity was sufficient and of high quality. The evidence for structural validity was inconsistent of low quality. The evidence for construct validity was inconsistent of moderate quality. Concerning the FSFI-6, the evidence for criterion validity was sufficient of moderate quality. The evidence for internal consistency was rated as indeterminate. The evidence for reliability was inconsistent of low quality. The evidence for construct validity was inconsistent of very low quality. No information was available on structural validity of the FSFI-6, and measurement error, responsiveness, and cross-cultural validity of both FSFI-6 and FSFI-19.

CLINICAL IMPLICATIONS

Conflicting and lack of evidence for some of the measurement properties of the FSFI-19 and FSFI-6 indicates the importance of further research on the validity of these patient-reported outcome measures. We advise researchers who use the FSFI-19 to perform confirmatory factor analyses and report the factor structure found in their sample. Regardless of these concerns, the FSFI-19 and FSFI-6 have strong criterion validity. Pragmatically, they are good screening tools for the current definition of female sexual dysfunction.

STRENGTH & LIMITATION

A strong point of the review is the use of predefined guidelines. A limitation is the use of a precise rather than a sensitive search filter.

CONCLUSIONS

The FSFI requires more research on structural validity (FSFI-19 and FSFI-6), reliability (FSFI-6), construct validity (FSFI-19), measurement error (FSFI-19 and FSFI-6), and responsiveness (FSFI-19 and FSFI-6). Further corroboration of measurement invariance (both across cultures and across subpopulations) in the factor structure of the FSFI-19 is necessary, as well as tests for the unidimensionality of the FSFI-6. Neijenhuijs KI, Hooghiemstra N, Holtmaat K, et al. The Female Sexual Function Index (FSFI)-A Systematic Review of Measurement Properties. J Sex Med 2019;16:640-660.

The relationship between marital satisfaction and depression in infertile couples: an actor-partner interdependence model approach

BACKGROUND

Much evidence consistent with the Marital Discord Model of Depression (MDMD) suggests that marital discord is associated with depression, but no studies examine the relationship between marital satisfaction and depression at the dyadic level in infertile couples. This study examined the effect of actors' and partners' marital satisfaction on depressive symptoms in husband-wife dyads with infertility using an innovative dyadic analysis approach, the Actor-Partner Interdependence Model (APIM).

METHODS

In this cross-sectional study, the sample comprised of 141 infertile couples in the evaluation phase of treatment. We collected data in a referral infertility center in Tehran, Iran between February and May 2017. Marital satisfaction and depression were measured using ENRICH marital satisfaction scale and Hospital Anxiety and Depression Scale, respectively, before starting the treatment. Dyadic analysis applying the APIM was used. In this study, actor effect is the impact of a person's marital satisfaction on his/her own depression. Partner effect is the impact of a person's marital satisfaction on his/her partner's depression.

RESULTS

The APIM analysis revealed that both men and women's marital satisfaction excreted an actor effect on their own depression (β = - 0.412, P < 0.001; β = - 0.263, P = 0.002, respectively). Furthermore, men's marital satisfaction exerted a significant partner effect on their wives' depression symptoms (β = - 0.170, p = 0.047). However, the wives' marital satisfaction was not related to their husbands' depressive symptoms (β = - 0.028, P = 0.735).

CONCLUSIONS

The findings support that the MDMD is a valid theoretical model for the conceptualization of marital satisfaction and depressive symptoms among infertile couples and suggest that interventions to reduce depressive symptoms should include both men and women.

Validation of the Turkish Version of the Sexual Health Outcomes in Women Questionnaire (SHOW-Q) in Turkish-Speaking Women

INTRODUCTION

The Sexual Health Outcomes in Women Questionnaire (SHOW-Q) is designed to evaluate the sexual life of women for satisfaction, orgasm, desire, and pelvic problem interference. The SHOW-Q is important for evaluating worsening of sexual life for patients with pelvic problems and the management of these women to improve their sexual life.

AIMS

To validate the Turkish versions of the SHOW-Q for Turkish-speaking women.

METHODS

The Turkish version of the SHOW-Q was generated by two independent professional English-to-Turkish translators. The translated version of the SHOW-Q was reverse translated by two bilingual translators whose native language was English. Women with at least one symptom related to pelvic problems (n = 71) and those with no symptoms (n = 38) were included in the present study.

MAIN OUTCOME MEASURES

Test-retest reliability analysis, content-face validity, internal consistency reliability, item-total correlations, convergent validity, construct validity, and factorial validity were performed to assess the psychometric properties of the Turkish versions of the SHOW-Q.

RESULTS

Test-retest reliability demonstrated good correlation for all subscales. Cronbach α values ranged from 0.735 to 0.892 and indicated high internal consistency. There was a strong correlation for the corresponding subscales between the SHOW-Q and the Female Sexual Function Index. The mean score of each SHOW-Q subscale showed significant differences between symptomatic and asymptomatic patients.

CONCLUSION

The Turkish version of the SHOW-Q is a valid and reliable instrument that can be used to evaluate the sexual life of Turkish-speaking women with different pelvic problems.

Women's Endorsement of Models of Sexual Response: Correlates and Predictors

Few studies have investigated endorsement of female sexual response models, and no single model has been accepted as a normative description of women's sexual response. The aim of the study was to establish how women from a population-based sample endorse current theoretical models of the female sexual response--the linear models and circular model (partial and composite Basson models)--as well as predictors of endorsement. Accordingly, 174 heterosexual women aged 18-55 years were included in a cross-sectional study: 74 women diagnosed with female sexual dysfunction (FSD) based on DSM-5 criteria and 100 non-dysfunctional women. The description of sexual response models was used to divide subjects into four subgroups: linear (Masters-Johnson and Kaplan models), circular (partial Basson model), mixed (linear and circular models in similar proportions, reflective of the composite Basson model), and a different model. Women were asked to choose which of the models best described their pattern of sexual response and how frequently they engaged in each model. Results showed that 28.7% of women endorsed the linear models, 19.5% the partial Basson model, 40.8% the composite Basson model, and 10.9% a different model. Women with FSD endorsed the partial Basson model and a different model more frequently than did non-dysfunctional controls. Individuals who were dissatisfied with a partner as a lover were more likely to endorse a different model. Based on the results, we concluded that the majority of women endorsed a mixed model combining the circular response with the possibility of an innate desire triggering a linear response. Further, relationship difficulties, not FSD, predicted model endorsement.