Research on patient comprehension, health literacy, and care transitions.

This article covers what to tell a patient starting a once-weekly GLP-1 injection. It uses one product as its example, a once-weekly semaglutide injection, with every point drawn from its FDA prescribing information (revised March 2026). The same label also covers a once-daily tablet form with different instructions, and other GLP-1 medicines, including other semaglutide products, have their own labels, schedules, and warnings, so patient education should always follow the specific product's label.

The injection schedule

• The injection is taken once a week, on the same day each week, at any time of day, with or without meals.
• If a dose is missed and the next scheduled dose is more than 2 days away, the label says to take the missed dose as soon as possible. If the next dose is less than 2 days away, skip the missed dose and resume on the regular day.

A rule like this matters days later, so it helps to write it down somewhere the patient can find it.

Common side effects

The most common side effects in the label (5 percent or more) include nausea, diarrhea, vomiting, constipation, abdominal pain, dysesthesia, headache, and fatigue, among others. Telling patients this in advance, and what to do about it, can help an expected side effect feel less like an emergency.

Warnings patients should know

• Dehydration and kidneys. The label notes postmarketing reports of acute kidney injury, in some cases requiring hemodialysis, mostly in patients whose nausea, vomiting, or diarrhea led to dehydration. Patients should know to tell their care team about nausea, vomiting, or diarrhea that does not let up.
• Pancreatitis and gallbladder problems. Both appear in the label's warnings. Patients should know which symptoms, such as persistent or severe abdominal pain, mean they should call right away.
• Thyroid C-cell tumors. The label carries a boxed warning. It states that it is unknown whether the drug causes thyroid C-cell tumors, including medullary thyroid carcinoma, in humans, and it is contraindicated in patients with a personal or family history of MTC or with MEN 2.
• Anesthesia and sedation. The label notes rare postmarketing reports of pulmonary aspiration during general anesthesia or deep sedation. Patients should tell their care team they take this medicine before any procedure.

After the visit

That is a lot of information for one visit, much of it needed days or weeks later, when the patient is home and the first side effect appears. Pairing the conversation with something the patient can return to, such as a short video reached by QR code, gives them the answer at the moment they need it.

Qik Productions makes GLP-1 education videos for clinics, pharmacies, and digital health programs, each reviewed by a specialized pharmacist. See how it works.

Ask different studies whether patients "understood" their discharge instructions, and you'll get different definitions of understanding.

One emergency department study interviewed patients after discharge and scored how closely their account matched the medical record across four areas: diagnosis and cause, emergency department care, post-discharge care, and return instructions. Another gave patients questionnaires built for five specific complaints: closed head injury, vaginal bleeding, laceration care, splint care, and upper respiratory infection. A third asked patients four standard spoken questions right after discharge, covering diagnosis, treatment, follow-up, and return precautions, and scored each answer on a four-level scale.

These aren't small methodological differences. A record-matched interview, a complaint-specific questionnaire, and a scored set of spoken questions are measuring related but distinct things, with different room for partial credit. The first of those studies found 78% of patients with deficient comprehension in at least one area. The third found 49% among patients discharged the standard way. That isn't necessarily a contradiction. The patients, the settings, and the rulers were all different.

That inconsistency matters beyond academic tidiness. If a hospital can't compare its own comprehension results to the published literature, or to its own results from last year, it has no reliable way to know whether a change in process actually helped or just looked different. Before asking whether an intervention works, the more basic question is whether "understood" is being measured the same way twice.

Giving a child liquid medicine looks simple. Two studies of parents found it is easy to get wrong, and that the way the dose is written and the tool used to measure it both play a part.

Units make a difference

A 2014 study in Pediatrics looked at 287 English- or Spanish-speaking parents whose kids were prescribed liquid medicine in two emergency departments. It defined an error as more than a 20 percent deviation from the dose. 39.4 percent of parents made an error measuring the intended dose, and 41.1 percent made an error with the prescribed dose. 16.7 percent used a nonstandard instrument, such as a kitchen spoon.

Parents whose instructions used teaspoon or tablespoon units made errors more often than those using milliliters only: 42.5 percent versus 27.6 percent for the intended dose, about twice the odds after adjustment. The associations were greater for parents with low health literacy and for non-English speakers. The study was cross-sectional, so it shows an association rather than proving the units caused the errors.

Tools make a difference too

A larger randomized experiment published in 2016 had 2,110 English- or Spanish-speaking parents of kids 8 and under, in three urban pediatric clinics, measure nine doses each using a cup and two kinds of oral syringe. 84.4 percent made at least one dosing error, and 21.0 percent made at least one large error, defined as more than twice the dose.

Cups produced more errors than syringes, with an adjusted odds ratio of 4.6, especially for smaller doses. A teaspoon-only label paired with a milliliter-and-teaspoon tool was associated with more errors than milliliter-only labels and tools (adjusted odds ratio 1.2). Parents measured the doses in a clinic setting, not at home.

What that means for teaching parents

The American Academy of Pediatrics issued a 2015 policy statement recommending metric, milliliter-based dosing devices for children's liquid medicines. The study authors concluded that their findings support a milliliter-only standard, and recommended oral syringes over cups, particularly for smaller doses. Beyond that, a few practical habits help when teaching parents:

• Write and say the dose in milliliters, and show them the exact line on the syringe to fill to.
• Ask the parent to measure the dose in front of you, rather than asking whether they understand.
• Give them something to check at home, when they measure the dose on their own.

Qik Productions makes short animated medication videos for kids and parents, each reviewed by a specialized pharmacist, that families can replay at home. See medication education videos.

For a patient who is not comfortable in English, a discharge plan or medication instruction written only in English may never really reach them. That makes language a practical question for any hospital, clinic, or pharmacy planning patient education.

How many patients this affects

In its report on language use in the United States, the Census Bureau found that in 2019, 67,802,345 people, or 22 percent of the population age 5 and over, spoke a language other than English at home. Spanish was the most common, with about 41.8 million speakers. Across the whole population age 5 and over, 8 percent spoke English less than "very well", down from 9 percent in 2009.

Those are national figures. The mix in any one hospital's or pharmacy's community can look very different, which is why local data on preferred language matters more than any national average.

What the federal rule says

Section 1557 of the Affordable Care Act prohibits discrimination in covered health programs, and its implementing regulation lists national origin among the protected grounds, along with race, color, sex, age, and disability. Its regulation on language access, 45 CFR 92.201, as published in the Code of Federal Regulations, includes several points that bear directly on patient education:

• Covered entities must take reasonable steps to provide meaningful access to each individual with limited English proficiency.
• When interpretation is needed, they must offer a qualified interpreter. When translation is needed, they must use a qualified translator.
• They may not require patients to bring their own interpreter, and may not rely on a minor child to interpret except as a temporary measure, while finding a qualified interpreter, in an emergency involving an imminent threat to someone's safety or welfare.
• If machine translation is used for material that is critical to an individual's rights, benefits, or meaningful access, where accuracy is essential, or where the content contains complex, non-literal, or technical language, the translation must be reviewed by a qualified human translator.

That last point matters for anyone producing translated handouts or videos. Medication instructions and discharge plans may fall into those categories; your compliance team can confirm.

Practical steps

• Record each patient's preferred language in their chart.
• Have translated materials reviewed by a qualified human translator, especially dosing and warning-sign content.
• Keep the same clinical content in every language, so a Spanish-speaking family gets the same instructions an English-speaking one does.
• Offer formats that do not depend on reading level, such as narrated video, alongside written materials.

Qik Productions makes patient education videos in English, Spanish, or any language a client's patients need, with written transcripts available. See how it works.

Hospitals looking for patient education videos can license a ready-made library that covers many topics, or commission videos made for their own patients, policies, and brand. Both can work. The real question is whether a particular video will help a patient once they are home.

A free federal checklist

The Agency for Healthcare Research and Quality publishes a free tool for this, the Patient Education Materials Assessment Tool (PEMAT). AHRQ describes it as a way to evaluate and compare materials on two things: understandability and actionability. There is a separate version for audiovisual materials, PEMAT-A/V, so it can be applied to video directly.

Scores are the share of applicable items a material meets. AHRQ's guidance says the higher the score, the more understandable or actionable the material, and it does not set a single pass mark. That makes it most useful for comparing options side by side.

What the audiovisual checklist asks

A few of the PEMAT-A/V items are worth checking on any video you are considering:

• Is the purpose completely clear?
• Does it use plain, everyday language, and define medical terms when it has to use them?
• Is the information broken into short segments, in a logical order, with a summary?
• Is on-screen text easy to read, and is the narration clear and well paced?
• Does it name at least one specific action the patient can take, speak to the viewer directly, and break that action into clear steps?

A video can explain a condition well and still leave a patient unsure what to do next.

Questions to ask any vendor

• Who checks the clinical content, and when? Ask whether review happens once at the end or at the script stage and again on the finished video.
• Does it match your instructions? A video that contradicts your own discharge paperwork creates the confusion it was meant to prevent.
• Which languages, and who reviews the translation? Ask whether a qualified human reviews any translated script.
• How does it reach patients? QR codes on printed materials, links in portal messages or after-visit summaries, and waiting room screens all reach patients at different moments.
• What does the reporting measure? Views and completion rates show whether patients opened and finished a video. They do not show whether the patient understood it.
• Who owns the finished video? This matters if you ever want to host it yourself or change vendors.

Where Qik fits

Qik Productions makes custom animated patient education videos for kids and adults, about two to three minutes long. Each topic is reviewed by a specialized pharmacist in that area, who checks the script and then the finished video. Videos reach patients by QR code, text, email, or direct link, and the reporting shows views and completion. You can order one video at a time, with no annual contract. See how it works.

Patient handouts, consent forms, and after-visit summaries are usually written once and reused for everyone who walks through the door. That approach assumes a fairly consistent baseline of reading and processing ability across patients. National data says that assumption doesn't hold.

The 2003 National Assessment of Adult Literacy, a nationally representative federal assessment that included a component designed to measure health literacy, found that only 12% of adults had proficient health literacy. Fifty-three percent scored intermediate, 22% scored basic, and 14% scored below basic.

Put differently, nearly 9 in 10 adults fall short of the proficient tier.

This isn't a story about intelligence. Health literacy is narrower and more specific: whether a person can work with the vocabulary, numbers, and formats of health information, often while dealing with stress, pain, or unfamiliar terminology for the first time. Someone can be highly literate in every other part of their life and still struggle with a discharge form written in clinical shorthand.

The practical implication is less about any single format and more about calibration: materials written for a proficient reader are written for roughly one adult in eight. Closing that gap starts with treating comprehension, not compliance with paperwork, as the actual outcome being measured.

A hospital discharge summary and the medications a patient is actually taking at home aren't always the same list. The gap between them is where a lot of care transitions research has focused, because it's a point where things can go wrong.

A 2005 study in Archives of Internal Medicine followed 375 adults aged 65 and older discharged within a single Colorado managed care system. A geriatric nurse practitioner assessed each patient's medications at home 24 to 72 hours after discharge. A total of 14.1% of patients had at least one medication discrepancy.

The researchers then categorized what contributed to those discrepancies. Of the contributing factors they identified, 50.8% were patient-associated and 49.2% were system-associated. On the patient side, the single largest factor was unintentional nonadherence, at about 34% of all factors. On the system side, incomplete, inaccurate, or illegible discharge instructions accounted for about 16%, and conflicting information from different sources for 14.5%.

The discrepancies weren't just a paperwork problem. Among patients with a medication discrepancy, 14.3% were rehospitalized within 30 days, compared with 6.1% of patients without one (P = .04). That is an association, and the study does not show that the discrepancies caused the readmissions. A higher number of medications and a diagnosis of congestive heart failure were both associated with greater risk.

A related 2013 study of 237 recently discharged older adults, also built on a home visit, found that health literacy, cognition, and self-efficacy were important predictors of whether patients understood and carried out their discharge instructions. Neither the discharge diagnosis nor the complexity of the instructions was a significant predictor.

The 2005 study's authors noted their sample came from one health system in the Denver area, was predominantly white and relatively well educated, and had prescription drug coverage, so how well these figures generalize elsewhere isn't known. What the two studies together suggest is that the risk at a care transition isn't concentrated in any one place. It's split between what the patient does with the instructions and what the instructions themselves actually communicate.

Hospitals and clinics spend enormous effort writing, printing, and handing over discharge instructions. Whether any of it stuck gets checked far less consistently.

One study of 140 patients discharged from emergency departments in two health systems interviewed them afterward and compared what they understood with their medical records across four areas: diagnosis and cause, emergency department care, post-discharge care, and return instructions. Seventy-eight percent showed deficient comprehension in at least one of those areas, and 51% in two or more.

The patients often didn't know it. When their comprehension was deficient, they perceived difficulty only 20% of the time.

A Dutch emergency department study using a different method found that 49% of patients discharged the standard way left with a comprehension deficit in at least one area.

The areas tested are the ones that matter once the patient is home. In the first study, 34% of the deficiencies involved post-discharge care, compared with 15% for diagnosis and cause. In the Dutch study, return precautions were the most common deficit. In other words, patients were more likely to leave knowing what they had than knowing what to do next or which symptom should send them back.

None of this is a story about any one clinician doing a poor job. A discharge conversation comes at the end of a stressful visit, delivered to someone who may be in pain, medicated, or simply overwhelmed. The information can be accurate and complete and still not land.

What the research does make clear is that handing over instructions is not the same as patients understanding them. The first step toward closing that gap isn't picking a fix. It's measuring what patients actually retained, not just what was said to them.

Discharge instructions are the written and spoken plan a patient takes home: what happened, which medicines to take, what to watch for, and who to call. What goes into them can vary from one hospital to the next.

What the federal rule covers

For hospitals in Medicare, discharge planning falls under 42 CFR 482.43. The rule requires hospitals to include patients and their caregivers or support persons as active partners in discharge planning, to discuss the results of the discharge planning evaluation with the patient or their representative, and to send the necessary medical information to the providers responsible for follow-up care.

What this section does not do is spell out the content of patient education. It sets the process, not the actual words, format, or level of detail a patient receives.

A tested framework for the content

The Agency for Healthcare Research and Quality publishes the Re-Engineered Discharge (RED) toolkit, developed and tested by researchers at Boston University Medical Center. Its in-hospital components include:

• Checking the discharge plan against national guidelines
• Confirming the correct medicines and how the patient will get them
• Following up on tests or labs still pending at discharge
• Arranging equipment and services needed at home
• Teaching the written plan in plain language
• Assessing how well the patient understands it
• Reviewing what to do if a problem comes up

The toolkit includes a written After Hospital Care Plan the patient takes home and a follow-up phone call after discharge. AHRQ states that research showed the RED reduced readmissions and post-hospital emergency department visits.

Checking that it landed

Several of those components depend on the patient understanding the plan once they have it. AHRQ's teach-back guidance describes asking patients to explain, in their own words, what they need to know or do. It recommends avoiding yes-or-no questions such as "Do you understand?" because patients often say yes either way, and checking understanding in small pieces rather than all at the end.

A practical checklist

• The diagnosis, in plain words
• Every medicine: what changed, the dose, when to take it, and how to get it
• Follow-up appointments and pending results
• Warning signs, and exactly who to call for each
• Equipment or home services, and when they arrive
• A check, in the patient's own words, that the plan was understood

Written instructions can be paired with a short video the patient or family can replay at home, for example through a QR code on the paperwork. Qik Productions makes those videos to match a hospital's own instructions. See how it works.

The Census Bureau reports that the share of the US population who speak English less than "very well" was 9 percent in 2009 and 8 percent in 2019. For those patients, understanding a diagnosis or a discharge plan depends on language access actually being available, not just offered in theory.

A 2018 study of one public hospital in Sydney, Australia, in one of the country's most culturally and linguistically diverse regions, found a wide gap between identified need and delivered service. An interpreter was identified at admission as required in 15.7% of overnight-stay episodes of care, but an interpreter was provided in only 3.7% of episodes. Among the episodes flagged at admission, 17.1% went on to receive one.

A statewide survey of New Jersey hospitals published in 2008 found that only 3% of the 67 responding hospitals had full-time interpreters, a ratio the authors put at one interpreter for every 240,748 New Jersey residents with limited English proficiency. The response rate was 55%, and the answers were self-reported by hospitals.

A third study, of 234 hospitalized Spanish- and Chinese-speaking patients with limited English proficiency, asked the patients directly. Only 17% reported that a professional interpreter was used with their physician at admission, 14% with physicians since admission, and 4% with nurses.

None of these studies set out to measure whether interpretation improves outcomes. What they measured is simpler and more uncomfortable: whether the service that's supposed to close the language gap is actually reaching the patients who need it. The three used different measures in very different settings, and each pointed to a gap between need and supply.

Leaving the NICU isn't the end of a medically complex birth story, it's usually the start of a different one, where parents take over tube feeding, apnea monitoring, oxygen equipment, or a detailed medication schedule that used to be a nurse's job. Whether a family is actually ready for that handoff is a separate question from whether the discharge checklist got completed.

A 2026 scoping review published in BMC Pediatrics looked at what the research says about that handoff. The reviewers searched PubMed, Embase, CINAHL, Scopus, and the Cochrane Library through November 2025, screened 281 records, assessed 63 in full, and included 35 sources: 32 peer-reviewed papers and 3 clinical trial registry records.

Six themes recurred across that research: caregiver readiness and skill-building, psychosocial adaptation, care coordination and continuity across systems, home care management, post-discharge surveillance and follow-up engagement, and late preterm safety standards. Structured education plans, written materials, family-centered models, and telehealth-enabled discharge planning were generally associated with better caregiver preparedness and perceived readiness, though the review notes the benefits varied by family needs and context.

One finding stood out from the rest: breakdowns clustered at outpatient transitions, when guidance and follow-up were unclear. That places the weak point after the family has left the unit, when a full care team is no longer down the hall to answer questions and a family is largely managing alone between appointments.

The review's authors called for future research using standardized measures and implementation-focused designs. A scoping review maps themes across studies and does not pool them into a single figure, so what's documented here is the pattern of where things go wrong, not a number for how often.

That still points to something practical. NICU teams already spend real effort teaching parents before discharge. The open question this research raises isn't whether that teaching happens. It's whether it holds up weeks later, on an ordinary Tuesday at home, when the follow-up call is the only thing standing in for the unit down the hall.

The teach-back method asks a patient to explain, in their own words, what they were just told about their diagnosis, treatment, or care plan. If they can't, the clinician knows immediately and can try again, rather than finding out days later when something goes wrong at home.

The method addresses a specific gap. The Indian Health Service's teach-back guidance states that studies have shown 40 to 80 percent of the medical information patients receive is forgotten immediately, and that nearly half of the information retained is incorrect. The page does not name the studies behind those figures.

A 2020 study in a Dutch emergency department compared two consecutive groups of patients: 239 discharged the standard way and 244 discharged with teach-back. In the standard-discharge group, 49% left with a comprehension deficit in at least one area of their discharge information, most commonly return precautions, where 41.3% showed a deficit. In the teach-back group, 11.9% left with a deficit. The teach-back conversation added 1 minute 39 seconds on average. The study was not randomized, and patients who did not speak sufficient Dutch were excluded.

Teach-back isn't a test of the patient. It's a check on whether the explanation itself worked, because a nod doesn't show whether the explanation landed or the patient simply wants to wrap up the conversation.