PDF Publication Title:
Text from PDF Page: 036
Statistical Analysis 24 All statistical testing including the determination of normality and equal variance was performed using commercial software SAS 9.2. A 5% significance level and 95% confidence intervals were used for all tests. (Statistical test results can be found in Appendix B) To test for inter-rater and intra-rater reliability, intra-class correlation coefficients were performed on the data sets. Given that an excellent level of reliability was found, the first set of data from the first observer was used for all subsequent statistical analysis. Each dental arch was treated as independent of each other and as such all statistical analysis was conducted in such terms. Descriptive statistics on age, extraction space size and LED exposure and compliance were calculated (Table 3.1). To account for the possibility that each arch can have its own starting extraction space size (y-intercept in Figures 3.4 and 3.5) and rate of space closure (slope in figures 3.4 and 3.5), a random effects model was used. To compare the change in the size of the extraction space over time, the data was analyzed using repeated measures linear models to assess the effect of LED exposure and time, adjusted for cumulative LED, wire size, sex and age. Quadratic models were also explored to determine if it was a better description of the data. Furthermore, to see if there were any appreciable differences associated with the cumulative LED phototherapy exposure for each patient, averages at 4 arbitrary time points (20, 45, 60 and 80 days) were extrapolated and the differences in the rate of space closure where compared.PDF Image | Effect of LED Phototherapy on the Rate of Orthodontic Tooth Movement
PDF Search Title:
Effect of LED Phototherapy on the Rate of Orthodontic Tooth MovementOriginal File Name Searched:
Chung_Sean_EV_201311_MSc_thesis.pdfDIY PDF Search: Google It | Yahoo | Bing
Cruise Ship Reviews | Luxury Resort | Jet | Yacht | and Travel Tech More Info
Cruising Review Topics and Articles More Info
Software based on Filemaker for the travel industry More Info
The Burgenstock Resort: Reviews on CruisingReview website... More Info
Resort Reviews: World Class resorts... More Info
The Riffelalp Resort: Reviews on CruisingReview website... More Info
| CONTACT TEL: 608-238-6001 Email: greg@cruisingreview.com | RSS | AMP |