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You searched for +publisher:"University of Saskatchewan" +contributor:("Lim, Hyun J."). Showing records 1 – 2 of 2 total matches.

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University of Saskatchewan

1. Black, Timothy. The effect of a transfer, lifting and repositioning (TLR) injury prevention program on musculoskeletal injury rates among direct care workers.

Degree: 2009, University of Saskatchewan

Problem Statement: The burden of musculoskeletal injuries among workers is very high, particularly so in direct care workers involved in patient handling. Efforts to reduce injuries have shown mixed results. Strong evidence for intervention effectiveness is lacking. Specific Aims: The goal of this study was to evaluate the effectiveness of a patient handling injury prevention program implemented in the Saskatoon Health Region (SHR) comparing it with a non-randomized control group, Regina Qu’Appelle Health Region (RQHR), in a pre-post design. Injury rates, lost-time days, and claim costs were the outcomes of interest. Intervention: A Transfer, Lifting and Repositioning (TLR) program, consisting of engineering and administrative ergonomic controls, was implemented in SHR hospitals from 2002-2005. Methods: Data on time loss and non-time loss injuries, lost time days, and claims costs were collected from the SHR and RQHR for corresponding time periods one year pre and one year post-intervention. Age, length of service, profession, and sex were selected as covariates. Full Time Equivalents (FTE) data were collected for each time period. Univariate and multivariate Poisson regression were performed. Results: Rates for all injuries (number of injuries/100 FTE) dropped from 14.68 pre-intervention to 8.1 post-intervention. Control group all injury rates, while overall lower in absolute value, dropped to a lesser degree, from 9.29 to 8.4. Time loss injury rates decreased from 5.3 to 2.51 in the SHR, while they actually increased from 5.87 to 6.46 in the RQHR, for the same intervention periods. Poisson regression showed the greatest reduction in injury rate, both time loss (Rate ratio=0.48, 95% C.I: 0.34-0.68) and non-time loss (Rate Ratio=0.25, 95% C.I: 0.15-0.41) in the smaller long term care facility controlling for hospital size. Analysis of injury rates, incidence rate ratios, and incidence rate differences showed significant differences between the intervention and comparison group for all injuries and time loss injuries. Mean claim cost/injury decreased from 3906.20 to 2200.80 and mean time loss days/claim decreased from 35.87 days to 16.23 days for the SHR. Conclusions: The study provides evidence for the effectiveness of a multi-factor TLR program for direct-care health workers, and emphasizes their implementation, especially in smaller hospitals. Advisors/Committee Members: Lim, Hyun J., Koehncke, Niels, Busch, Angela, Abonyi, Sylvia.

Subjects/Keywords: direct care workers; hospital workers; patient handling; musculoskeletal injuries; injury prevention; occupational health; ergonomics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Black, T. (2009). The effect of a transfer, lifting and repositioning (TLR) injury prevention program on musculoskeletal injury rates among direct care workers. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/etd-01162009-132211

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Black, Timothy. “The effect of a transfer, lifting and repositioning (TLR) injury prevention program on musculoskeletal injury rates among direct care workers.” 2009. Thesis, University of Saskatchewan. Accessed April 20, 2019. http://hdl.handle.net/10388/etd-01162009-132211.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Black, Timothy. “The effect of a transfer, lifting and repositioning (TLR) injury prevention program on musculoskeletal injury rates among direct care workers.” 2009. Web. 20 Apr 2019.

Vancouver:

Black T. The effect of a transfer, lifting and repositioning (TLR) injury prevention program on musculoskeletal injury rates among direct care workers. [Internet] [Thesis]. University of Saskatchewan; 2009. [cited 2019 Apr 20]. Available from: http://hdl.handle.net/10388/etd-01162009-132211.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Black T. The effect of a transfer, lifting and repositioning (TLR) injury prevention program on musculoskeletal injury rates among direct care workers. [Thesis]. University of Saskatchewan; 2009. Available from: http://hdl.handle.net/10388/etd-01162009-132211

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


University of Saskatchewan

2. Qi, Jiezhi. Comparison of proportional hazards and accelerated failure time models.

Degree: 2009, University of Saskatchewan

The field of survival analysis has experienced tremendous growth during the latter half of the 20th century. The methodological developments of survival analysis that have had the most profound impact are the Kaplan-Meier method for estimating the survival function, the log-rank test for comparing the equality of two or more survival distributions, and the Cox proportional hazards (PH) model for examining the covariate effects on the hazard function. The accelerated failure time (AFT) model was proposed but seldom used. In this thesis, we present the basic concepts, nonparametric methods (the Kaplan-Meier method and the log-rank test), semiparametric methods (the Cox PH model, and Cox model with time-dependent covariates) and parametric methods (Parametric PH model and the AFT model) for analyzing survival data. We apply these methods to a randomized placebo-controlled trial to prevent Tuberculosis (TB) in Ugandan adults infected with Human Immunodificiency Virus (HIV). The objective of the analysis is to determine whether TB preventive therapies affect the rate of AIDS progression and survival in HIV-infected adults. Our conclusion is that TB preventive therapies appear to have no effect on AIDS progression, death and combined event of AIDS progression and death. The major goal of this paper is to support an argument for the consideration of the AFT model as an alternative to the PH model in the analysis of some survival data by means of this real dataset. We critique the PH model and assess the lack of fit. To overcome the violation of proportional hazards, we use the Cox model with time-dependent covariates, the piecewise exponential model and the accelerated failure time model. After comparison of all the models and the assessment of goodness-of-fit, we find that the log-logistic AFT model fits better for this data set. We have seen that the AFT model is a more valuable and realistic alternative to the PH model in some situations. It can provide the predicted hazard functions, predicted survival functions, median survival times and time ratios. The AFT model can easily interpret the results into the effect upon the expected median duration of illness for a patient in a clinical setting. We suggest that the PH model may not be appropriate in some situations and that the AFT model could provide a more appropriate description of the data. Advisors/Committee Members: Lim, Hyun J., Bickis, Mikelis G., Srinivasan, Raj, Soteros, Chris, Guo, Xulin.

Subjects/Keywords: HIV/AIDS; Tuberculosis; parametric models; survival analysis; Cox model

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Qi, J. (2009). Comparison of proportional hazards and accelerated failure time models. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/etd-03302009-140638

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Qi, Jiezhi. “Comparison of proportional hazards and accelerated failure time models.” 2009. Thesis, University of Saskatchewan. Accessed April 20, 2019. http://hdl.handle.net/10388/etd-03302009-140638.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Qi, Jiezhi. “Comparison of proportional hazards and accelerated failure time models.” 2009. Web. 20 Apr 2019.

Vancouver:

Qi J. Comparison of proportional hazards and accelerated failure time models. [Internet] [Thesis]. University of Saskatchewan; 2009. [cited 2019 Apr 20]. Available from: http://hdl.handle.net/10388/etd-03302009-140638.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Qi J. Comparison of proportional hazards and accelerated failure time models. [Thesis]. University of Saskatchewan; 2009. Available from: http://hdl.handle.net/10388/etd-03302009-140638

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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