NUR 545 Module 2 Screening Tools Paper Example

One Question, a Nutrition Label or Seven Words: Choosing a Health Literacy Screening Approach for a Community Health Center

[Student Name]

Southern New Hampshire University

NUR 545: Advanced Health and Literacy Assessment

Screening Tools Paper

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[Date]

The organization, setting and figures below are a composite written as a model document. No real employer, client, colleague or patient is described.

One Question, a Nutrition Label or Seven Words: Choosing a Health Literacy Screening Approach for a Community Health Center

A health center that wants to respond to limited health literacy has to decide whether to screen for it, and if so, how. The choice is not trivial. A tool that takes too long will not be used, one that embarrasses patients will damage trust, and one that misses most people with limited literacy offers false reassurance. This paper compares three widely cited instruments, the Single Item Literacy Screener (SILS), the Newest Vital Sign (NVS) and the short form of the Rapid Estimate of Adult Literacy in Medicine (REALM-SF), and applies the comparison to a composite community health center serving about 9,000 adult patients. It concludes that no screening tool is accurate enough to replace clear communication with every patient, and that the center should adopt universal precautions as its default and use the Newest Vital Sign selectively when a treatment plan depends on reading and numeracy.

The Single Item Literacy Screener

The SILS asks one question: how often the patient needs someone to help them read instructions, pamphlets or other written material from a doctor or pharmacy, answered on a five-point scale from never to always. In a study of 999 primary care adults, of whom 17% had limited reading ability on a longer reference test, a response of sometimes or more often caught 54% of those with limited reading ability and correctly cleared 83% of those without it (Morris et al., 2006). Its negative predictive value was high, 0.90, but its positive predictive value was only 0.40.

In practice, those numbers mean the SILS rules out limited reading ability fairly well but misses almost half of the people who have it. Its advantages are speed, since it takes seconds and can be added to an intake form, and dignity, since it asks about help rather than testing the patient. Its limits are that it depends on honest self-report from people who often hide difficulty and that it measures reading rather than numeracy.

The Newest Vital Sign

The NVS gives the patient an ice cream nutrition label and asks six questions that require reading and calculation, such as how many calories a portion contains. It takes about three minutes. In its development study, it correlated with a longer reference test and had an area under the curve of 0.88 in English and 0.72 in Spanish; fewer than four correct answers suggested possible limited literacy, while more than four made it unlikely (Weiss et al., 2005).

The NVS has two strengths the other tools lack: it measures numeracy, which matters for tasks such as adjusting insulin or reading a glucose meter, and it performs a real task rather than asking about one. Its costs are time, the need for a trained person to administer it and the risk that some patients experience it as a test they might fail. Its accuracy in Spanish was lower, which matters in a center where many patients prefer Spanish.

REALM-SF

The REALM-SF asks patients to read aloud seven medical words and assigns an approximate reading grade level. It was developed from the longer 66-word REALM, and its scores correlated at about 0.95 with the full instrument, with high agreement in classifying patients above or below sixth- and eighth-grade reading levels (Arozullah et al., 2007). It is quick, usually under two minutes.

The REALM-SF measures word recognition and pronunciation, not comprehension or numeracy, so a patient can pronounce a word correctly without understanding it. It is available only in English and was developed primarily as a research instrument. Reading aloud in front of a clinician can also be uncomfortable for patients who struggle.

The Tools Side by Side

Table 1 lines up the practical and measurement features a busy clinic would weigh.

Table 1

Comparison of Three Health Literacy Screening Tools

Why Screening Is Not Enough

Each tool has a place, but none identifies everyone who needs help, and all of them classify patients at a single moment, although understanding varies with illness, stress and the complexity of the information. Low health literacy is common and associated with poorer outcomes across many measures (Berkman et al., 2011), so the cost of missing a patient is high. For that reason the AHRQ toolkit recommends a universal precautions approach: structuring communication so that every patient can understand, using plain language, teach-back, clear written materials and help with forms, whatever a screening test says (Brega et al., 2015). Screening then becomes a way to add support for patients who need more, not a gate that decides who gets clear communication.

Recommendation for the Health Center

The composite health center should adopt three practices. First, universal precautions for every patient: plain-language materials, teach-back for every new medication or self-care task and an offer of help with forms at registration. Second, the NVS, in English or Spanish, for patients starting a treatment that depends on reading and calculating, such as insulin, anticoagulation or complex inhaler regimens, where a result would change how teaching is designed. Third, no routine use of the SILS or REALM-SF as a gatekeeper, since a negative result could lead staff to skip steps that every patient needs. Results of the NVS should be documented privately in the chart, explained to the patient as a way to tailor teaching and never recorded as a label on the problem list.

Conclusion

The SILS is fast and respectful but misses nearly half of patients with limited reading ability; the NVS measures reading and numeracy but takes time; the REALM-SF correlates well with its parent test but measures only word recognition. None is accurate enough to decide who deserves clear communication. A community health center serves its patients best by communicating clearly with everyone and using the Newest Vital Sign selectively when a treatment depends on skills the patient must use at home.

References

Arozullah, A. M., Yarnold, P. R., Bennett, C. L., Soltysik, R. C., Wolf, M. S., Ferreira, R. M., Lee, S.-Y. D., Costello, S., Shakir, A., Denwood, C., Bryant, F. B., & Davis, T. (2007). Development and validation of a short-form, rapid estimate of adult literacy in medicine. Medical Care, 45(11), 1026-1033. https://doi.org/10.1097/MLR.0b013e3180616c1b

Berkman, N. D., Sheridan, S. L., Donahue, K. E., Halpern, D. J., & Crotty, K. (2011). Low health literacy and health outcomes: An updated systematic review. Annals of Internal Medicine, 155(2), 97-107. https://doi.org/10.7326/0003-4819-155-2-201107190-00005

Brega, A. G., Barnard, J., Mabachi, N. M., Weiss, B. D., DeWalt, D. A., Brach, C., Cifuentes, M., Albright, K., & West, D. R. (2015). AHRQ health literacy universal precautions toolkit (2nd ed., AHRQ Publication No. 15-0023-EF). Agency for Healthcare Research and Quality.

Morris, N. S., MacLean, C. D., Chew, L. D., & Littenberg, B. (2006). The Single Item Literacy Screener: Evaluation of a brief instrument to identify limited reading ability. BMC Family Practice, 7, Article 21. https://doi.org/10.1186/1471-2296-7-21

Weiss, B. D., Mays, M. Z., Martz, W., Castro, K. M., DeWalt, D. A., Pignone, M. P., Mockbee, J., & Hale, F. A. (2005). Quick assessment of literacy in primary care: The newest vital sign. Annals of Family Medicine, 3(6), 514-522. https://doi.org/10.1370/afm.405