Translation and Cross-cultural Adaptation of the Self-care of Hypertension Inventory for Thais With Hypertension

Measuring Self-Care: A Description of the Family of Disease-Specific and Generic Instruments Based on the Theory of Self-Care of Chronic Illness

BACKGROUND

In recent years, there has been an exponential increase in attention paid to the patient-reported outcome of self-care. Many investigators have used one of the families of self-care instruments freely available on the website www.self-care-measures.com . These self-care measures have been translated into many languages, which are also available on the website. The measures include both disease-specific and generic instruments, which are based on a common theoretical framework, the Middle Range Theory of Self-Care of Chronic Illness.

PURPOSE

The purpose of this article is to illustrate similarities among the instruments and to standardize their scoring, analysis, and use. We describe the Self-Care of Heart Failure Index, the Self-Care of Coronary Heart Disease Inventory, the Self-Care of Hypertension Inventory, the Self-Care of Diabetes Inventory, the Self-Care of Chronic Obstructive Pulmonary Disease Inventory, the Self-Care of Chronic Illness Inventory, and the Self-Care Inventory. Detailed guidance on scoring, translation, and analysis is provided. Complementary measures of self-care self-efficacy and those used to measure caregiver contributions to patient self-care are briefly described.

CONCLUSIONS

Many of the common questions of instrument users are answered in this article. Following this guidance will facilitate consistent use of the instruments, which will enable users to compare their results to those of others worldwide and facilitate future reviews and meta-analyses.Clinical ImplicationsThis review, emphasizing standard scoring and interpretation, is useful for clinicians and researchers across various populations and settings.

Psychometric Testing of the Thai Version of Self-Care of Chronic Illness Inventory Version 4c in Patients With Stroke

BACKGROUND

Self-Care of Chronic Illness Inventory version 4c is a non-disease-specific self-care measure used in individuals with multiple chronic conditions. This instrument may be applied to patients with specific diseases such as stroke.

OBJECTIVE

The aim of this study was to evaluate the psychometric properties of the Thai version of the Self-Care of Chronic Illness Inventory version 4c in patients with stroke.

METHODS

This multicenter, cross-sectional study adhered to the COSMIN (Consensus-based Standards for the Selection of Health Measurement Instruments) guidelines and enrolled patients with stroke from 16 primary care centers in southern Thailand. Structural validity was assessed using confirmatory factor analysis, internal consistency reliability using Cronbach α coefficient and global reliability index, and test-retest reliability using intraclass correlation coefficients.

RESULTS

The final analysis included a total of 350 participants. Confirmatory factor analysis supported the 2-factor Self-Care Maintenance scale structure, although the item allocation to the dimensions differed from that of the original model. The Self-Care Monitoring scale demonstrated a 1-factor structure with permitted residual covariance. The Self-Care Management scale maintained a 2-factor structure, similar to that of the original model. Simultaneous confirmatory factor analysis of the combined items supported the general model with the 3 scales. The Self-Care Maintenance scale exhibited marginally adequate α (0.68) and ω (0.66) coefficients, and an adequate composite reliability index (0.79). The other 2 scales demonstrated adequate α (range, 0.79-0.86), ω (range, 0.75-0.86), and composite reliability (range, 0.83-0.86) indices. Intraclass correlation coefficients showed adequate test-retest reliability for all scales (range, 0.76-0.90).

CONCLUSIONS

The generic self-care measure, Self-Care of Chronic Illness Inventory version 4c, demonstrated strong psychometric properties in patients with stroke. This instrument may be a valuable tool for assessing stroke self-care in Thailand.

Exploring factors associated with hypertension self-care in primary care: The role of nurse education levels and patient-related factors

AIM

To explore the association between nurse education levels and patient-related factors with hypertension self-care.

BACKGROUND

Although self-care development is recognized as a healthcare provider-patient encounter, the attribution of nurse education level to hypertension self-care is not well addressed.

DESIGN

A cross-sectional study.

METHODS

Hypertensive patients from 15 primary care facilities were sampled, and self-care was assessed using the Self-Care of Hypertension Inventory version 2.0, with standardized scores ≥70 indicating adequate self-care. Data on patient-related factors were obtained from electronic health records, self-reports and laboratory tests, while nurse education levels were categorized as standard (baccalaureate-prepared) or higher (post-baccalaureate specialty).

RESULTS

A total of 1493 participants were included in this study, with a median age of 66 years and 77.7% being female. Approximately 10% of participants had adequate self-care, and 66% received care from higher educated nurses. The study showed the relation between nurse education levels and the self-care of the patients. Adequate hypertension self-care was significantly associated with higher educated nurse providers and patient-related factors, including intermediate to higher education, non-overweight/obese and the absence of age-related comorbidities.

CONCLUSIONS

Hypertensive patients who had been provided care by higher educated nurses and their favourable sociodemographic, lower cardiometabolic risk and no concomitant disease were more likely to demonstrate adequate self-care.

Psychometric testing of the cross-culturally adapted Thai version of the Self-Care Self-Efficacy Scale version 3.0 in individuals with chronic illnesses

Objective

To assess the psychometric properties of the Thai version of the Self-Care Self-Efficacy Scale version 3.0 (SCSES-v3.0) in individuals with chronic illnesses. Although originally developed and tested in a Western context, its applicability in Asian populations, including Thailand, remains inadequately explored.

Methods

Psychometric tests were guided by COSMIN principles. This included the translation of the English version into Thai based on the ISPOR framework. Nine nursing experts evaluated the content validity. Data were obtained from a multicenter cross-sectional study conducted between July and November 2022. This study included individuals with chronic conditions from 16 primary care centers in Thailand. We tested the structural validity using exploratory factor analysis (EFA) and confirmatory factor analysis (CFA), and concurrent validity in relation to the Self-Care of Chronic Illness Inventory version 4.c (SC-CII-v4.c). We tested the scale's reliability with McDonald's ω, Cronbach's α, and the intraclass correlation coefficient (ICC).

Results

The Thai SCSES-v3.0 demonstrated excellent content validity (k = 1.00). The final analysis included a total of 385 participants. The EFA with the first split-half subsample (n = 193) extracted a two-factor structure. One reflected SCSES for maintenance and monitoring behaviors and another captured SCSES for management behaviors (item 6-10). CFA with the second split-half subsample (n = 192) and the overall sample (n = 385) supported the scale's two-factor model with high factor loadings. Each dimension and the overall SCSES-v3.0 positively correlated with each scale and the overall SC-CII-v4.c. McDonald's ω and Cronbach's α (both ranged 0.91-0.94) and ICC (ranged 0.95-0.96), indicated excellent internal reliability and test-retest reliability, respectively.

Conclusions

The identification of a valid and reliable two-factor model for the Thai SCSES-v3.0 renders it a valuable tool for clinicians and investigators, facilitating the assessment of self-efficacy in self-care across diverse contexts.

Cross-cultural adaptation and psychometric evaluation of the Thai version of Self-Care of Chronic Illness Inventory Version 4.c

Objectives

To translate and validate the Thai Self-Care of Chronic Illness Inventory version 4.c (Thai SC-CII v4.c) in individuals with chronic illnesses.

Methods

A scale translation and cross-sectional validation study was conducted. The English version was translated for Thai involved nine steps: preparation, forward translation, reconciliation, back-translation, back-translation review, harmonization, cognitive debriefing, review of cognitive debriefing and finalization, and proofreading. A cross-sectional study was conducted from July to November 2022 at 16 primary care centers in southern Thailand, involving 410 participants with at least one chronic condition. Validity assessments included structural, convergent, and discriminant validity. Concurrent validity examined correlations between SC-CII v4.c with the Self-Care Self-Efficacy Scale (SCSES) and self-perceived health. Internal coherence reliability was calculated using Cronbach's α coefficient, item-total correlation coefficients, and the composite reliability (CR) index.

Results

Thai SC-CII v4.c demonstrated excellent translational validity (κ = 0.99). The specified Self-Care Maintenance model fit well, with minor differences in health promoting behavior and illness-related behavior items compared to the original model. The original Self-Care Monitoring, and Self-Care Management models fit well with Thai data. Simultaneous confirmatory factor analysis confirmed a satisfactory fit of the full SC-CII v4.c. Convergent validity had partial support (average variance extracted = 0.23-0.51), and discriminant validity was established (heterotrait-monotrait ratios = 0.37-0.88). Concurrent validity was supported by positive correlations between each scale and overall SC-CII v.4c with SCSES (r = 0.25-0.65) and self-perceived health (r = 0.09-0.35). The Cronbach's α coefficient were adequate for all scales except the Self-Care Maintenance scale (Cronbach's α = 0.68), but the CR estimate improved the reliability of all three scales (ranging 0.80-0.82). All items had satisfactory item-total correlation coefficients (ranging 0.34-0.71), except the one pertaining to sleep.

Conclusions

The Thai SC-CII v4.c is valid and reliable for assessing self-care in various chronic illnesses. Further testing is recommended for patients with specific diseases.

Evaluating the Dimensionality and Reliability of the Thai Self-Care of Hypertension Inventory Version 2.0

PURPOSE

Self-care is essential for hypertensive individuals to promote optimal health and illness treatment. We developed the Thai Self-Care of Hypertension Inventory (SC-HI) version 2.0 from the original US version using a multi-stage approach for cross-cultural adaptation. Scales previously studied outside a US context had different dimensions and factor solutions. Therefore, we examined the Thai SC-HI's factorial validity, construct validity, and internal reliability within a Thai context.

METHODS

We administered a cross-sectional survey with hypertensive patients in 10 primary care settings, and conducted exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) on two sets of separate samples from each of five sites to examine the model's factorial validity and construct validity. We estimated scale reliability with Cronbach's alpha and McDonald's omega coefficients.

RESULTS

Participants were predominantly female, older adults, with mean age 66 years (SD = 11.94; range 36-97 years). The self-care maintenance scale had three factors and demonstrated good fit when the error covariances were respecified. The two-factor self-care management scale had different factorial solutions compared to previous models. The CFA result showed good fit indices for the Thai, original US, and Brazilian models. The self-care confidence scale was unidimensional, with partially supported fit indices that improved after we respecified the error covariances. Reliability coefficients estimated by difference methods were nearly equal: slightly lower than desired for self-care maintenance (.68-.70) and inadequate for self-care management (.62-.65); self-care confidence reliability was adequate (.89-.90).

CONCLUSION

The Thai SC-HI has good psychometric characteristics and reflects the original instrument's theoretical basis.