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Int J Nurs Pract. 2013 Jun;19(3):281-7. doi: 10.1111/ijn.12076.

Construct validity and reliability of the Single Checking Administration of Medications Scale.

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Deakin University-Melbourne Campus, School of Nursing and Midwifery, Faculty of Health, Burwood, Victoria, Australia.


Research indicates that single checking of medications is as safe as double checking; however, many nurses are averse to independently checking medications. To assist with the introduction and use of single checking, a measure of nurses' attitudes, the thirteen-item Single Checking Administration of Medications Scale (SCAMS) was developed. We examined the psychometric properties of the SCAMS. Secondary analyses were conducted on data collected from 503 nurses across a large Australian health-care service. Analyses using exploratory and confirmatory factor analyses supported by structural equation modelling resulted in a valid twelve-item SCAMS containing two reliable subscales, the nine-item Attitudes towards single checking and three-item Advantages of single checking subscales. The SCAMS is recommended as a valid and reliable measure for monitoring nurses' attitudes to single checking prior to introducing single checking medications and after its implementation.

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