Mark Griffin

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Research in the areas of organizational climate and work performance was used to develop a framework for measuring perceptions of safety at work. The framework distinguished perceptions of the work environment from perceptions of performance related to safety. Two studies supported application of the framework to employee perceptions of safety in the(More)
The authors measured perceptions of safety climate, motivation, and behavior at 2 time points and linked them to prior and subsequent levels of accidents over a 5-year period. A series of analyses examined the effects of top-down and bottom-up processes operating simultaneously over time. In terms of top-down effects, average levels of safety climate within(More)
Although interest in multilevel organizational theory, research, and methods has been on the rise in recent years, vigorous debates in the literature regarding appropriate ways to conceptualize and measure multilevel constructs, justify aggregation, and analyze multilevel models have contributed to confusion. New investigators interested in testing(More)
BACKGROUND There is a paucity of data describing how general practitioners (GPs) label or record depression. AIMS To determine incidence and sociodemographic variation in GP-recorded depression diagnoses and depressive symptoms. METHOD Annual incidence rates calculated using data from 298 UK general practices between 1996 and 2006, adjusted for year of(More)
Few organizational change studies identify the aspects of change that are salient to individuals and that influence well-being. The authors identified three distinct change characteristics: the frequency, impact and planning of change. R. S. Lazarus and S. Folkman's (1984) cognitive phenomenological model of stress and coping was used to propose ways that(More)
OBJECTIVES Doubt over the cost-effectiveness of the cholinesterase inhibitors in dementia has renewed interest in alternative treatments such as Ginkgo biloba. We aimed to determine the effectiveness and the safety profile of Ginkgo biloba for treating early stage dementia in a community setting. METHODS We conducted a community-based, pragmatic,(More)
OBJECTIVE To evaluate the impact of telling patients their estimated spirometric lung age as an incentive to quit smoking. DESIGN Randomised controlled trial. SETTING Five general practices in Hertfordshire, England. PARTICIPANTS 561 current smokers aged over 35. INTERVENTION All participants were offered spirometric assessment of lung function.(More)
BACKGROUND Anxiety is common, with significant morbidity, but little is known about presentations and recording of anxiety diagnoses and symptoms in primary care. This study aimed to determine trends in incidence and socio-demographic variation in General Practitioner (GP) recorded diagnoses of anxiety, mixed anxiety/depression, panic and anxiety symptoms.(More)
BACKGROUND The 'Hawthorne Effect' may be an important factor affecting the generalisability of clinical research to routine practice, but has been little studied. Hawthorne Effects have been reported in previous clinical trials in dementia but to our knowledge, no attempt has been made to quantify them. Our aim was to compare minimal follow-up to intensive(More)
BACKGROUND Medication-related admissions are an important cause of hospital admissions in older people. The scope for prevention is less clear. OBJECTIVES To characterize medication-related hospital admissions in older people and assess their preventability. METHODS This was a cross-sectional, observational study conducted over 3 months. A pharmacist(More)