Re-examination at renewal -- an evaluation

Michigan Department of State, Office of Planning and Analysis Operations, Lansinghttp://deepblue.lib.umich.edu/bitstream/2027.42/1389/2/10466.0001.001.pd

Why risk analysis isn't working

In this article the author argues that despite its popularity among researchers and managers alike, Risk Analysis as a management tool has not been successful. He postulates that in the end managers will give up attempting to make formal analysis of risks, substituting more effective means of living with the `results' of those risks as they arise.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/21929/1/0000336.pd

Management science approaches to the determination of urban ambulance requirements

This research paper summarizes a systematic approach to the determination of urban ambulance requirements. Quantitative measures of ambulance system performance and alternative system configurations were developed, and these were examined for the city of Detroit, Michigan. Sampling techniques and data analysis procedures were used to develop an analytical model of the Detroit emergency recovery system, and this model was then utilized to predict the performance of alternative system configurations under varying operating policies. Results and conclusions are presented for the specific system under consideration; extensions of these techniques to other urban emergency systems are also suggested.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/33559/1/0000060.pd

Changing perspectives on the capital investment process

The environment within which institutions undertake commercial and industrial activity changes both as a result of decisions dependent on the institution itself and as a result of decisions independent of the institution. In recent years many of these changes have resulted in changing perspectives on the range of criteria which should be considered when determining how and where large corporations should invest their money. This paper examines these changes in corporate practice and identifies the cumulative results of these changes in the environment of corporate activity. The paper also examines some of the key elements in new approaches which corporations are adopting to capital investment decisions by utilizing data on a broadly based research project which examines in depth the capital investment/ resource allocation processes of five large, worldwide, manufacturing firms. The subject is of vital importance to large and small businesses, both because of the crucial importance of investment decisions and because of the importance for future strategic planning of identifying the environment within which corporate activities take place.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/23632/1/0000596.pd

A Probabilistic framework for accident data analysis*

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/32887/1/0000266.pd

Ohio Economic Insects and Related Anthropods

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Risk factors for low back pain outcome: Does it matter when they are measured?

Background: The early identification of factors that increase risk of poor recovery from acute low back pain (LBP) is critical to prevent the transition to chronicity. Although most studies of risk factors for poor outcome in LBP tend to investigate the condition once it is already persistent, there is evidence to suggest that this differs from risk factors measured during the early-acute stage. This study aimed to identify early risk factors for poor outcome in the short- and long-term in individuals with acute LBP, and to compare this with factors identified at 3 months in the same cohort. Methods: One hundred and thirty-three individuals were recruited within 2 weeks of an acute LBP episode and completed questionnaires related to their sociodemographic, psychological, clinical and history/treatment status at baseline and 3 months later, and their pain-level fortnightly for 12 months. Results: Of the 133 participants recruited, follow-up data were provided by 120 at 3 months, 97 at 6 months, 85 at 9 months and 94 at 12 months. Linear regression identified various factors at baseline (acute phase) and 3 months later that predicted short- and long-term outcome (pain level, change in pain). Key findings were that: (1) depressive symptoms at baseline most consistently predicted worse outcome; (2) psychological factors in general at 3 months were more predictive of outcome than when measured at baseline; (3) early health care utilization predicted better outcome, whereas use of pain medication later (3 months) predicted worse outcome; and (4) sex and BMI predicted outcome inconsistently over 12-months. Conclusions: The results highlight the multidimensional nature of risk factors for poor outcome in LBP and the need to consider time variation in these factors

Alumina and Synthesis Intermediates Derived from Diethylkaluminum Amide, Benzaldehyde and Water

The reaction of diethylaluminum amide [Et2AINH2] with benzaldehyde in toluene produces a solution of ethylaluminoxane polymer [EtAlO] and hydrobenzamide [PhCH=NCH(Ph)N=CHPh]. Alumina then is precipitated by the addition of water. Transition aluminas that may be useful in heterogeneous catalyst applications are obtained after calcining. Details of the chemistry of solution intermediates according to 1H NMR and the properties of the alumina product according to surface area analyses and powder x-ray diffraction are described

The association of accident severity and frequency with vehicle age : A study in three Michigan counties for the period 1 January to 30 September, 1966

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/32760/1/0000131.pd

Evaluation of complication rates after coronary artery bypass surgery using administrative data

Our objectives were (1) to determine if studying hospital complication rates after coronary artery bypass graft (CABG) surgery provides information not available when only mortality is studied, and (2) to reexplore the utility of ICD-9-CM administrative data for CABG outcomes assessment. Using data from Massachusetts, we identified CABG cohorts from 1990 and 1992 to respectively develop and validate multivariate risk adjustment models predicting in-hospital mortality and complications. The resulting models had good discrimination and calibration. In 1992, adjusted hospital complication rates ranged widely from 13.0% to 57.6%, while mortality rates ranged from 1.4% to 6.1%. Hospitals with high complication rates tended to have high mortality (r = 0.74, p = 0.006), but 2 of the 12 hospitals studied ranked quite differently when judged by complications rather than mortality. We conclude that (1) complications after CABG occur frequently and may provide information about hospital quality beyond that obtained from hospital mortality rates, and that (2) administrative data continue to be a promising resource for outcomes research