Patient reported adherence to hypertension treatment: A revalidation study

He, Wei, Bonner, Ann, & Anderson, Debra (2016) Patient reported adherence to hypertension treatment: A revalidation study. European Journal of Cardiovascular Nursing, 15(2), pp. 150-156.

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Abstract

Background

Adherence to hypertension management in patients with hypertension is known to influence their blood pressure control. It is important to measure patients’ adherence behaviours to assist with designing appropriate interventions to improve blood pressure control.

Aims

The purposes of this study were to use confirmatory factor analysis to revalidate the Therapeutic Adherence Scale for Hypertensive Patients (TASHP), and to calculate the cut-off score for classifying adherence behaviours into two groups: satisfactory and low adherence behaviours.

Methods

Systematic random sampling was used to recruit patients with hypertension in China. Demographic characteristics, the TASHP and blood pressure were collected. The psychometric tests of the TASHP included: construct validity, criteria-related validity, internal reliability, and split-half reliability. The area under the receiver operating characteristics curve and Youden index were used to identify the cut-off score of the TASHP for blood pressure control.

Results

This study involved 366 patients. Confirmatory factor analysis supported the four-component structure of the TASHP proposed in the original scale development study. The TASHP has a satisfactory internal reliability (Cronbach’s α > 0.7) and a satisfactory split-half reliability (Spearman–Brown coefficients > 0.7). The patients with overall scores of the TASHP ⩾ 109 points were considered to have satisfactory adherence behaviours.

Conclusion

The TASHP is a validated and reliable instrument to measure the adherence to hypertension management in Chinese patients with hypertension. The cut-off score of 109 points can be considered as an effective measure to classify the level of adherence into satisfactory and low adherence behaviours.

Impact and interest:

1 citations in Scopus
1 citations in Web of Science®
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ID Code: 88961
Item Type: Journal Article
Refereed: Yes
Keywords: Hypertension, adherence, confirmatory factor analysis, cut-off score, China
DOI: 10.1177/1474515115603902
ISSN: 1873-1953
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > NURSING (111000) > Nursing not elsewhere classified (111099)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Nursing
Deposited On: 14 Oct 2015 00:50
Last Modified: 05 May 2016 05:38

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