A patient-reported pressure ulcer health-related quality of life instrument for use in prevention trials (PU-QOL-P): psychometric evaluation

Nutritional interventions for preventing and treating pressure ulcers

BACKGROUND

Pressure ulcers are localized injuries to the skin or the underlying tissue, or both, and are common in older and immobile people, people with diabetes, vascular disease, or malnutrition, as well as those who require intensive or palliative care. People with pressure ulcers often suffer from severe pain and exhibit social avoidance behaviours. The prevention and treatment of pressure ulcers involves strategies to optimize hydration, circulation, and nutrition. Adequate nutrient intake can reduce the risk factor of malnutrition and promote wound healing in existing pressure ulcers. However, it is unclear which nutrients help prevent and treat pressure ulcers. This is an update of an earlier Cochrane Review.

OBJECTIVES

To evaluate the benefits and harms of nutritional interventions (special diets, supplements) for preventing and treating pressure ulcers in people with or without existing pressure ulcers compared to standard diet or other nutritional interventions.

SEARCH METHODS

We used extensive Cochrane search methods. The latest search was in May 2022.

SELECTION CRITERIA

We included randomized controlled trials (RCTs) in people with or without existing pressure ulcers, that compared nutritional interventions aimed at preventing or treating pressure ulcers with standard diet or other types of nutritional interventions.

DATA COLLECTION AND ANALYSIS

We used standard Cochrane methods. Our primary outcome for prevention studies was the proportion of participants who developed new (incident) pressure ulcers. For treatment studies, our primary outcomes were time to complete pressure ulcer healing, number of people with healed pressure ulcers, size and depth of pressure ulcers, and rate of pressure ulcer healing. Secondary outcomes were side effects, costs, health-related quality of life and acceptability. We used GRADE to assess certainty of evidence for each outcome.

MAIN RESULTS

We included 33 RCTs with 7920 participants. Data for meta-analysis were available from 6993 participants. Pressure ulcer prevention Eleven studies (with 12 arms) compared six types of nutritional interventions for the prevention of pressure ulcers. Compared to standard diet, energy, protein and micronutrient supplements may result in little to no difference in the proportion of participants developing a pressure ulcer (energy, protein and micronutrient supplements 248 per 1000, standard diet 269 per 1000; RR 0.92, 95% CI 0.71 to 1.19; 3 studies, 1634 participants; low-certainty evidence). Compared to standard diet, protein supplements may result in little to no difference in pressure ulcer incidence (protein 21 per 1000, standard diet 28 per 1000; RR 0.75, 95% CI 0.49 to 1.14; 4 studies, 4264 participants; low-certainty evidence). The evidence is very uncertain about the gastrointestinal side effects of these supplements (protein 109 per 1000, standard diet 155 per 1000; RR 0.70, 95% CI 0.06 to 7.96; 2 studies, 140 participants, very low-certainty evidence). The evidence is very uncertain about the effects of protein, arginine, zinc and antioxidants; L-carnitine, L-leucine, calcium, magnesium and vitamin D; EPA, GLA and antioxidants; disease-specific supplements on pressure ulcer incidence when compared to standard diet (1 study each; very low-certainty evidence for all comparisons). Pressure ulcer treatment Twenty-four studies (with 27 arms) compared 10 types of nutritional interventions or supplements for treatment of pressure ulcers. Compared to standard diet, energy, protein and micronutrient supplements may slightly increase the number of healed pressure ulcers (energy, protein and micronutrients 366 per 1000, standard diet 253 per 1000; RR 1.45, 95% CI 1.14 to 1.85; 3 studies, 577 participants, low-certainty evidence). The evidence is very uncertain about the effect of these supplements on gastrointestinal side effects. Compared to standard diet, the evidence is very uncertain about the effect of protein, arginine, zinc and antioxidant supplements on pressure ulcer healing (pressure ulcer area: mean difference (MD) 2 cm² smaller, 95% CI 4.54 smaller to 0.53 larger; 2 studies, 71 participants, very low-certainty evidence). The evidence on side effects of these supplements is very uncertain. Compared to standard diet, supplements with arginine and micronutrients may not increase the number of healed pressure ulcers, but the evidence suggests a slight reduction in pressure ulcer area (MD 15.8% lower, 95% CI 25.11 lower to 6.48 lower; 2 studies, 231 participants, low-certainty evidence). The evidence is very uncertain about changes in pressure ulcer scores, acceptability, and side effects of these supplements. Compared to placebo, collagen supplements probably improve the mean change in pressure ulcer area (MD 1.81 cm² smaller, 95% CI 3.36 smaller to 0.26 smaller; 1 study, 74 participants, moderate-certainty evidence). The evidence is very uncertain about the effect of these supplements on side effects. The evidence is very uncertain about the effects of vitamin C, different doses of arginine; EPA, GLA (special dietary fatty acids) and antioxidants; protein; a specialized amino acid mixture; ornithine alpha-ketoglutarate and zinc supplements on pressure ulcer healing (1 or 2 studies each; very low-certainty evidence).

AUTHORS' CONCLUSIONS

The benefits of nutritional interventions with various compositions for pressure ulcer prevention and treatment are uncertain. There may be little or no difference compared to standard nutrition or placebo. Nutritional supplements may not increase gastrointestinal side effects, but the evidence is very uncertain. Larger studies with similar nutrient compositions would reduce these uncertainties. No study investigated the effects of special diets (e.g. protein-enriched diet, vegetarian diet) on pressure ulcer incidence and healing.

Comparison of aloe vera gel dressing with conventional dressing on pressure ulcer pain reduction: a clinical trial

BACKGROUND

Aloe Vera has a strong analgesic and anti-inflammatory effect, and its use effectively controls pain. This study aimed to determine the effect of Aloe Vera gel versus saline on pain relief of pressure ulcers.

METHODS

This study is a double-blind, randomized clinical trial conducted in Valiasr Hospital in Arak, Markazi Province, in the center of Iran from May 2020 to April 2022. Using the available sampling method, 95 patients with pressure ulcers were assessed for eligibility, 64 patients were selected, 33 patients were placed in the experimental and 34 patients in control. For the experimental group, the ulcers were first cleaned with normal saline to remove the slough and then the already prepared Aloe Vera gel was evenly applied. For control groups, the ulcers were first washed with normal saline to remove off the slough and then covered with a sterile cotton gage, and the wound was tightly bandaged with a cotton roll to keep the "daily dressing" in place. A visual pain scale was used to assess the patient's pain level. Data analysis was done using SPSS 17. Descriptive statistics, ANOVA, and greenhouse tests were used. The significance level was 0.05.

RESULTS

The results showed that the average pain score in both groups had a downward trend; that is, both dressings effectively reduced pressure ulcer pain (P < 0.001). The greenhouse test results showed that the difference between the two groups was significant (P < 0.001).

CONCLUSION

The results showed the effect of Aloe Vera gel in reducing pressure ulcer pain. Dressing with Aloe Vera gel is preferable to reducing pain during dressing changes in patients with pressure ulcers.

TRIAL REGISTRATION

Iranian Registry of Clinical Trials IRCT20180715040478N2, 2021-08-17.

Improving Skin Care Protocol Use in the Intensive Care Unit to Reduce Hospital-Acquired Pressure Injuries

BACKGROUND

Patients in the intensive care unit have the highest rate of hospital-acquired pressure injuries (HAPIs). In the United States, treatment of HAPIs costs an estimated $9.1 to $11.6 billion annually, with each occurrence adding an average of $10 708 to a patient's total hospital cost. In addition to their financial impact, pressure injuries negatively affect patients physically, socially, and psychologically and are associated with increased morbidity and mortality.

OBJECTIVE

An intensive care unit had 42 HAPIs during a single fiscal year, with 45% of them related to lack of adherence to the institution's established evidence-based skin care protocol. This project was conducted to increase adherence to the protocol and thus reduce the incidence of HAPIs in the unit.

METHODS

This quality improvement initiative featured an evidence-based multifaceted intervention to increase adherence to the skin care protocol. A review of medical records was used to determine general skin care protocol adherence and to measure the monthly incidence of HAPIs in the unit.

RESULTS

The number of HAPIs in the unit decreased from 33 in the preintervention period to 11 in the postintervention period, a reduction of 67%. The rate of general skin care protocol adherence improved to as high as 76% by the end of the postintervention period.

CONCLUSION

Use of an evidence-based multifaceted intervention can improve adherence to a skin care protocol in the intensive care unit, resulting in a reduced incidence of HAPIs and improved patient outcomes.

Constipation Mitigation by Rhubarb Extract in Middle-Aged Adults Is Linked to Gut Microbiome Modulation: A Double-Blind Randomized Placebo-Controlled Trial

Gut microbiota alterations are intimately linked to chronic constipation upon aging. We investigated the role of targeted changes in the gut microbiota composition in the relief of constipation symptoms after rhubarb extract (RE) supplementation in middle-aged volunteers. Subjects (95% women, average 58 years old) were randomized to three groups treated with RE at two different doses determined by its content of rhein (supplementation of 12.5 mg and 25 mg per day) vs. placebo (maltodextrin) for 30 days. We demonstrated that daily oral supplementation of RE for 30 days was safe even at the higher dose. Stool frequency and consistency, and perceived change in transit problem, transit speed and difficulty in evacuating, investigated by validated questionnaires, were improved in both groups of RE-treated volunteers compared to placebo. Higher abundance of Lachnospiraceae (mainly Roseburia and Agathobacter) only occurred after RE treatment when present at low levels at baseline, whereas an opposite shift in short-chain fatty acid (SCFA) levels was observed in both RE-treated groups (increase) and placebo (decrease). Fecal Lachnospiraceae and SCFA were positively correlated with stool consistency. This study demonstrates that RE supplementation promotes butyrate-producing bacteria and SCFA, an effect that could contribute to relieving chronic constipation in middle-aged persons.

Health-related quality of life and chronic wound characteristics among patients with chronic wounds treated in primary care: A cross-sectional study in Singapore

Chronic wounds commonly decrease patients' quality of life. Understanding how chronic wounds impact a patient's health‐related quality of life (HRQoL) is important for healthcare service delivery and treatment management. This study explored HRQoL among patients suffering from chronic wounds and investigated associations with patients' socio‐demographics and wound characteristics. Two hundred and thirty‐three patients across six primary care clinics were assessed and responded to a survey that collected information on socio‐demographic, wound characteristics, and HRQoL using the EQ‐5D‐5L instrument. Data were analysed by descriptive statistics and generalised linear models. The mean age of patients was 61.2 (SD: 14.6) years; 68.2% were males; and 61.8% were of Chinese origin. Arterial ulcers had the greatest negative impact on HRQoL related to mobility, self‐care, pain/discomfort and anxiety/depression, and the lowest VAS mean score 62.31 (SD: 28.3; range: 0‐100) indicating the worst health. HRQoL related to mobility was significantly associated with age (β = 0.008, P < .001), non‐Chinese ethnicity (β = 0.25, P = .001), mixed ulcers (β = −0.41, P = .022), atypical hard‐to‐heal wounds (β = −0.38, P = .021), wounds with low (β = 0.24, P = .044) to moderate (β = 0.29, P = .018) exudate level, and a wound duration ≥6 months (β = 0.19, P = .033). The findings can be used to improve healthcare delivery for patients with chronic wound to optimise their HRQoL.

An exploration of the perspectives of individuals and their caregivers on pressure ulcer/injury prevention and management to inform the development of a clinical guideline

BACKGROUND

Consumer engagement is a requirement of high quality clinical guidelines. Developing strategies to engage consumers and incorporate the perspectives of individuals with or at risk of pressure ulcers/injuries and their informal caregivers was one priority in the recent update of the EPUAP/NPIAP/PPPIA's Prevention and Treatment of Pressure Ulcers/Injuries: Clinical Practice Guideline.

AIMS

The aims were to determine the goals of individuals and caregivers for pressure ulcer/injury care, priorities for pressure ulcer/injury education and biggest problems related to pressure ulcers/injuries.

METHODS

An online, anonymous, international 10-item survey, accessible in nine languages was provided to individuals and their caregivers from April to October 2018. Descriptive statistics were used for quantitative data and a thematic analysis approach was used to analyse qualitative data.

RESULTS

There were 1233 individuals from 27 countries who completed the survey. Overall, individuals and caregivers had similar goals of care. Reducing the size of pressure ulcer/injury was selected more often as a care goal than complete healing. Individuals, compared to caregivers, considered managing pain more important. Qualitative data analysis identified five themes including knowledge, attitudes, and skills; risk factors for pressure ulcer/injury; accessing pressure ulcer/injury care; quality of life for patients and caregivers; and the pressure ulcer/injury.

CONCLUSIONS

The consumer survey provided consumer engagement and perspective that was incorporated into guideline development, including consideration during evaluation of the relevance and acceptability of recommendations, and assignment of recommendation strength ratings.

Pressure Injury Surveillance and Prevention in Australia: Monash Partners Capacity Building Framework

A hospital-acquired pressure injury (HAPI) is a common complication across the globe. The severity of HAPI ranges from skin redness and no skin breakdown to full skin and tissue loss, exposing the tendons and bones. HAPI can significantly impact the quality of life. In addition to the human cost, this injury carries a high economic burden with the cost of treatment far outweighing the preventative measures. The HAPI rates are a key indicator of health services performance. Globally, healthcare services aim to reduce its incidence. In Australia, the federal health minister has prioritised the need for improvement in HAPI surveillance and prevention. Capacity building is vital to optimise pressure injury (PI) surveillance and prevention in acute care services. In this perspective article, we provide a framework for capacity building to optimise HAPI prevention and surveillance in a large cross-sector collaborative partnership in Australia. This framework comprises six key action areas in capacity building to optimise the HAPI outcomes, such as research, organisational development, workforce development, leadership, collaboration, and consumer involvement.

Factors affecting repositioning policy compliance: an integrative review

Objective

To explore the factors affecting nurses’ compliance with repositioning policy.

Methods

An integrative review was conducted following the Whittemore and Knafl methodology to identify the problem related to repositioning policy compliance. We searched the following databases: Coherence Wounds Group Specialized Register (Jan 1997 to Jun 2019), Ovid MEDLINE (Jan 1997 to Jun 2019), EBSCO CINAHL (Jan 1997 to Jun 2019), and Clinical Key database (Jan 2014 to Oct 2018).

Results

The review revealed three factors that influence repositioning compliance: nurse-related factors, patient-related factors, and Environment-related factors.

Conclusions

These factors directly impact one another and, in turn, influence the compliance of nurses to the repositioning policy. However, there is no evidence currently available that explains the collective impact of these factors and how they interact to affect repositioning policy compliance. Nevertheless, all these factors are important and should be considered to enhance and further improve the quality of nursing care and adherence to the repositioning policy.

Improvement of gastrointestinal discomfort and inflammatory status by a synbiotic in middle-aged adults: a double-blind randomized placebo-controlled trial

Several studies suggest that microbial alterations (dysbiosis) are intimately linked to chronic inflammation occurring upon aging. The aim of this study was to investigate the potential interest of a synbiotic approach (co-administration of a probiotic bacteria and a prebiotic dietary fibre) to improve gastrointestinal wellness and inflammatory markers in middle-aged people. Middle-aged subjects were randomized to take synbiotic (Bifidobacterium animalis lactis and fructo-oligosaccharides (FOS)) or placebo for 30 days. Stool frequency and consistency were improved in both placebo and synbiotic-treated volunteers while the synbiotic treatment significantly decreased the number of days with abdominal discomfort. Synbiotic treatment had no impact on mood dimensions, quality of life scores or the overall composition of the gut microbiota (16S rRNA gene sequencing of DNA extracted from stool). Importantly, plasma proinflammatory cytokines (interleukin (IL)-6, IL-8, IL-17a and interferon-gamma (IFNγ)) were significantly lower after 30 days of synbiotic supplementation. This effect appears to be independent of the gut barrier function. This study demonstrates that a combination of B. animalis lactis and the well-known prebiotic FOS could be a promising synbiotic strategy to decrease inflammatory status with improvement of gut disorders in middle-aged people.

Comparing alternating pressure mattresses and high-specification foam mattresses to prevent pressure ulcers in high-risk patients: the PRESSURE 2 RCT

BACKGROUND

Pressure ulcers (PUs) are a burden to patients, carers and health-care providers. Specialist mattresses minimise the intensity and duration of pressure on vulnerable skin sites in at-risk patients.

PRIMARY OBJECTIVE

Time to developing a new PU of category ≥ 2 in patients using an alternating pressure mattress (APM) compared with a high-specification foam mattress (HSFM).

DESIGN

A multicentre, Phase III, open, prospective, planned as an adaptive double-triangular group sequential, parallel-group, randomised controlled trial with an a priori sample size of 2954 participants. Randomisation used minimisation (incorporating a random element).

SETTING

The trial was set in 42 secondary and community inpatient facilities in the UK.

PARTICIPANTS

Adult inpatients with evidence of acute illness and at a high risk of PU development.

INTERVENTIONS AND FOLLOW-UP

APM or HSFM - the treatment phase lasted a maximum of 60 days; the final 30 days were post-treatment follow-up.

MAIN OUTCOME MEASURES

Time to event.

RESULTS

From August 2013 to November 2016, 2029 participants were randomised to receive either APM (n = 1016) or HSFM (n = 1013). Primary end point - 30-day final follow-up: of the 2029 participants in the intention-to-treat population, 160 (7.9%) developed a new PU of category ≥ 2. There was insufficient evidence of a difference between groups for time to new PU of category ≥ 2 [Fine and Gray model HR 0.76, 95% confidence interval (CI) 0.56 to 1.04; exact p-value of 0.0890 and 2% absolute difference]. Treatment phase sensitivity analysis: 132 (6.5%) participants developed a new PU of category ≥ 2 between randomisation and end of treatment phase. There was a statistically significant difference in the treatment phase time-to-event sensitivity analysis (Fine and Gray model HR 0.66, 95% CI 0.46 to 0.93; p = 0.0176 and 2.6% absolute difference). Secondary end points - 30-day final follow-up: new PUs of category ≥ 1 developed in 350 (17.2%) participants, with no evidence of a difference between mattress groups in time to PU development, (Fine and Gray model HR 0.83, 95% CI 0.67 to 1.02; p-value = 0.0733 and absolute difference 3.1%). New PUs of category ≥ 3 developed in 32 (1.6%) participants with insufficient evidence of a difference between mattress groups in time to PU development (Fine and Gray model HR 0.81, 95% CI 0.40 to 1.62; p = 0.5530 and absolute difference 0.4%). Of the 145 pre-existing PUs of category 2, 89 (61.4%) healed - there was insufficient evidence of a difference in time to healing (Fine and Gray model HR 1.12, 95% CI 0.74 to 1.68; p = 0.6122 and absolute difference 2.9%). Health economics - the within-trial and long-term analysis showed APM to be cost-effective compared with HSFM; however, the difference in costs models are small and the quality-adjusted life-year gains are very small. There were no safety concerns. Blinded photography substudy - the reliability of central blinded review compared with clinical assessment for PUs of category ≥ 2 was 'very good' (kappa statistic 0.82, prevalence- and bias-adjusted kappa 0.82). Quality-of-life substudy - the Pressure Ulcer Quality of Life - Prevention (PU-QoL-P) instrument meets the established criteria for reliability, construct validity and responsiveness.

LIMITATIONS

A lower than anticipated event rate.

CONCLUSIONS

In acutely ill inpatients who are bedfast/chairfast and/or have a category 1 PU and/or localised skin pain, APMs confer a small treatment phase benefit that is diminished over time. Overall, the APM patient compliance, very low PU incidence rate observed and small differences between mattresses indicate the need for improved indicators for targeting of APMs and individualised decision-making. Decisions should take into account skin status, patient preferences (movement ability and rehabilitation needs) and the presence of factors that may be potentially modifiable through APM allocation, including being completely immobile, having nutritional deficits, lacking capacity and/or having altered skin/category 1 PU.

FUTURE WORK

Explore the relationship between mental capacity, levels of independent movement, repositioning and PU development. Explore 'what works for whom and in what circumstances'.

TRIAL REGISTRATION

Current Controlled Trials ISRCTN01151335.

FUNDING

This project was funded by the National Institute for Health Research Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 23, No. 52. See the NIHR Journals Library website for further project information.

Pressure injury data in Australian acute care settings: A comparison of three data sets

Hospital-acquired pressure injuries (HAPIs) represent a serious clinical and economic problem. The cost of treating HAPIs in Australian public hospitals was recently reported at AUS$983 million per annum. There are three main sources of data for documenting pressure injury (PI) occurrence in Australian hospitals: incident reporting, medical record coded data, and real-time surveys of pressure injury. PI data reported at hospital level and to external agencies using these three different sources are variable. This reporting issue leads to inaccurate data interpretation and hinders improvement in accuracy of PI identification and PI prevention. This study involved a comparison of the three different data sources in selected Australian hospitals, to improve the accuracy and comparability of data. Findings from this study provide benchmark areas for improvement in PI documenting and reporting. Better understanding the agreement between the three data sets could lead to a more efficient and effective sharing of data sources.

Effectiveness of high frequency ultrasound on pressure ulcer: A systematic review protocol of randomized controlled trial

BACKGROUND

This study aims to systematically assess the effectiveness of high frequency ultrasound (HFUS) on pressure ulcer (PU).

METHODS

In this study, PubMed, EMBASE, Cochrane Library, Web of Science, Chinese Biomedical Literature Database, and China National Knowledge Infrastructure will be searched from inception to the present without any language limitations. The primary outcomes include change in ulcer area, and time complete healing. The secondary outcomes consist of proportion of ulcers healed within trial period, quality of life, pain intensity, and adverse events. Cochrane risk of bias tool will be used to assess methodological quality. RevMan 5.3 software (London, UK) will be used to analyze the data.

RESULTS

This study will analyze change in ulcer area, time complete healing, proportion of ulcers healed within study period, quality of life, pain intensity, and adverse events on HFUS in patients with PU.

CONCLUSION

This study will provide most recent evidence for the effectiveness and safety of HFUS for patients with PU.

PROSPERO REGISTRATION NUMBER

PROSPERO CRD42019138177.

Monitoring Immobilized Elderly Patients Using a Public Provider Online System for Pressure Ulcer Information and Registration (SIRUPP): Protocol for a Health Care Impact Study

BACKGROUND

Pressure ulcers represent a major challenge to patient safety in the health care context, presenting high incidence (from 7% to 14% in Spain) and increased financial costs (€400-600 million/year) in medical treatment. Moreover, they are a significant predictor of mortality. The prevention of pressure ulcers in long-term care centers and patients' own homes is proposed as a priority indicator of health care quality. Early stage risk assessment and database recording are both crucial aspects of prevention, classification, diagnosis, and treatment.

OBJECTIVE

This project proposes a 3-year study of immobilized patients residing in the Granada-Metropolitan Primary Healthcare District (DSGM) and monitored via the Pressure Ulcer Information and Registration System (SIRUPP, Spanish initials). The project aims to estimate the incidence of PUs among immobilized elderly patients, analyze the health-related quality of life of these patients by using the Pressure Ulcer Quality of Life (PU-QoL) instrument in a sample of 250 patients, determine the average time to complete wound healing, estimate the rate of pressure ulcers-associated mortality, and assess the predictive value of the Braden and Mini Nutritional Assessment risk measurement scales in a sample of 1700 patients.

METHODS

The DSGM runs SIRUPP, which is linked to patients' electronic health records. Currently, 17,104 immobilized patients are monitored under this system. Health-related quality of life will be measured by patient self-reports using the Spanish Pressure Ulcer Quality of Life questionnaire, following cross-cultural adaptation and psychometric validation with respect to the English-language version.

RESULTS

The project commenced in June 2017 and is expected to conclude in April 2020.

CONCLUSIONS

This study addresses two main health outcomes-the time needed for wound healing and the mortality associated with pressure ulcers-both of which might be accounted for by variations in clinical practice and the health-related quality of life of patients with pressure ulcers.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

DERR1-10.2196/13701.

Comparison of generic and disease-specific measures in their ability to detect differences in pressure ulcer clinical groups

Patient-reported outcomes can be included as end points in pressure ulcer (PU) intervention trials to provide information to inform decision-making and improve the lives of patients. However, the challenge for researchers and clinicians is identifying and choosing an appropriate instrument for each particular application that suits their research questions and clinical context. To provide researchers and clinicians with the information needed to inform choice of patient-reported outcome measures, we compared a generic and disease-specific measures' ability to discriminate between clinical groups known to differ, and determined their responsiveness to change. We performed analyses on a subset of patients recruited to the PRESSURE 2 trial that completed the pressure ulcer quality of life instrument-prevention version (PU-QOL-P) and Short Form 12 Questionnaire (SF12) measures at baseline and 30-day posttreatment. Known-group validity and responsiveness-to-change analyses were conducted. The analysis sample consisted of 617 patients that completed both measures at baseline. Known-group validity revealed that some PU-QOL-P symptoms and function scales differentiated between people with category 2 PUs and those without PUs. A less meaningful pattern of results was observed for the SF12 scales, suggesting that the PU-QOL-P is more sensitive to differences between PU and non-PU populations. Responsiveness analysis revealed that the PU-QOL-P was more responsive in detecting disease severity than the SF12. The PU-QOL-P provides a standardized method for assessing PU-specific symptoms and functioning outcomes and is suitable for quantifying the benefits of PU interventions from the patient's perspective. Generic measures are useful for group comparisons of global quality of life domains. Choice of measure for each particular application should be determined by the purpose of the measurement and the information required.