Crop wild relatives of the United States require urgent conservation action.

The contributions of crop wild relatives (CWR) to food security depend on their conservation and accessibility for use. The United States contains a diverse native flora of CWR, including those of important cereal, fruit, nut, oil, pulse, root and tuber, and vegetable crops, which may be threatened in their natural habitats and underrepresented in plant conservation repositories. To determine conservation priorities for these plants, we developed a national inventory, compiled occurrence information, modeled potential distributions, and conducted threat assessments and conservation gap analyses for 600 native taxa. We found that 7.1% of the taxa may be critically endangered in their natural habitats, 50% may be endangered, and 28% may be vulnerable. We categorized 58.8% of the taxa as of urgent priority for further action, 37% as high priority, and 4.2% as medium priority. Major ex situ conservation gaps were identified for 93.3% of the wild relatives (categorized as urgent or high priority), with 83 taxa absent from conservation repositories, while 93.1% of the plants were equivalently prioritized for further habitat protection. Various taxonomic richness hotspots across the US represent focal regions for further conservation action. Related needs include facilitating greater access to and characterization of these cultural-genetic-natural resources and raising public awareness of their existence, value, and plight.

The clinical meaningfulness of ADAS-Cog changes in Alzheimer's disease patients treated with donepezil in an open-label trial.

BACKGROUND: In 6-month anti-dementia drug trials, a 4-point change in the Alzheimer's Disease Assessment Scale-Cognitive Subscale (ADAS-Cog) is held to be clinically important. We examined how this change compared with measures of clinical meaningfulness. METHODS: This is a secondary analysis of a 12 month open-label study of 100 patients (71 women) diagnosed with mild to moderate AD treated with 5-10 mg of donepezil daily. We studied the observed case, 6-month change from baseline on the ADAS-Cog, the Clinician's Interview Based Impression of Change-Plus Caregiver Input (CIBIC-Plus), patient-Goal Attainment Scaling (PGAS) and clinician-GAS (CGAS). RESULTS: At 6 months, donepezil-treated patients (n = 95) were more likely to show no change (+/- 3 points) on the ADAS-Cog (56%) than to improve (20%) or decline (24%) by 4-points. ADAS-Cog change scores were little correlated with other measures: from -0.09 for PGAS to 0.27 for the CIBIC-Plus. While patients who improved on the ADAS-Cog were less likely to decline on the clinical measures (26%), 43% of patients who declined on the ADAS-Cog improved on at least two of the clinical measures. CONCLUSION: The ADAS-Cog did not capture all clinically important effects. In general, ADAS-Cog improvement indicates clinical improvement, whereas many people with ADAS-Cog decline do not show clinical decline. The open-label design of this study does not allow us to know whether this is a treatment effect, which requires further investigation.

Responsiveness of goal attainment scaling in a randomized controlled trial of comprehensive geriatric assessment.

BACKGROUND AND OBJECTIVE: Frail elderly patients have complex problems that require a multidimensional assessment and a range of treatment goals. Goal Attainment Scaling (GAS) measures multiple, individualized goals, but its responsiveness in comparative clinical trials has not been established. METHODS: We assessed the responsiveness of GAS in a randomized, controlled trial of an interdisciplinary Mobile Geriatric Assessment Team (MGAT) in 265 rural frail older adults. Sensitivity to change was compared with standard measures; clinical meaningfulness was assessed in relation to a patient and a blinded physician global measure. RESULTS: At 3 months follow-up, GAS was the most responsive measure (standardized response mean 1.22, Norman's responsiveness statistic 0.58) compared with the Barthel Index (1.13, 0.46), Physical Self-Maintenance Scale (0.10, 0.16, 0.02), Instrumental Activities of Daily Living (0.23, 0.00), and modified Spitzer Quality of Life Index (-0.04, 0.00). CONCLUSIONS: Only GAS detected clinically important change associated with the MGAT intervention in these frail elderly patients. Clinometric measures can offer a responsive means of evaluating complex interventions.

Ability of hospitalized older adults to use their call bell: a pilot study in a tertiary care teaching hospital.

BACKGROUND AND AIMS: Cognitive impairment, visual loss and decreased mobility may make it difficult for older patients to use a hospital call bell when they need help. Inability to call for help may cause harm that could potentially be modified. Despite the importance of this issue, to date no study has determined the ability of older hospitalized adults to use their call bell. The aim of this study was to determine what percentage of hospitalized patients, aged 70 and older, are capable of using their call bell. METHODS: The study used a cross-sectional design. Patients were enrolled from two different clinical units in a tertiary care teaching hospital. Subjects participated in a structured interview to determine whether or not they could use the hospital call bell. RESULTS: Thirty-seven patients were interviewed. Of these, eleven patients were unable to use the call bell, seven because it was out of reach and four because they were unaware of how to use it. Only two of the four patients diagnosed with dementia were aware of their hospital call bell, compared with 31 of 33 patients without dementia (p = 0.050). CONCLUSIONS: The present system of hospital care is based on the assumption that patients are able to get help by activating their call bell. However, a large percentage of hospitalized patients are unable to use this device. Ensuring that call bells are positioned within reach of patients and providing increased supervision to patients with dementia may reduce the rate of adverse events in hospital.