Comparison of two instruments for hypertension self-care assessments among older adults from China.
Qiao Zhao, Yujie Guo, Lipei Gu and 1 others
PMID 36548119WHAT IT FOUND
Both the SC-HI and HBP SCP are reliable tools for assessing hypertension self-care in older Chinese adults.
The HBP SCP showed better accuracy in distinguishing self-care levels, with an area under the curve of 0.838 compared to 0.754 for the SC-HI.
Key findings
01The HBP SCP demonstrated higher discriminative ability than the SC-HI, with an area under the curve of 0.838 versus 0.754.
02Optimal cut-off scores were identified as 169.5 for the HBP SCP and 120.50 for the SC-HI to indicate higher self-care ability.
03Internal consistency was adequate for both scales, with Cronbach's alpha coefficients of 0.953 for the HBP SCP and 0.858 for the SC-HI.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
The study used convenience sampling from four hospitals in China, which may limit generalisability to other populations or settings. The SC-HI management subscale was only completed by patients who reported high blood pressure in the previous interval, which may have affected the results for that scale. The study was cross-sectional, so it cannot establish causality or track changes in self-care ability over time.
Declared interests
The study was funded by the Natural Science Foundation of Jiangsu Province. The authors declared no conflicts of interest.
The easy way to misread this
Do not assume these cut-off scores apply to populations outside of older Chinese adults with hypertension. The validity was tested against the ESCA in this specific group, and the authors note that further studies are needed for other hypertensive groups.