A Methodology for the Health Sciences - part 3 pps
A Methodology for the Health Sciences - part 3 pps
... 13, 633 36 .77 April 13, 744 30 0 0.08212 13, 1 93 23. 01 May 13, 894 31 0 0.08486 13, 633 5.00 June 13, 433 30 0 0.08212 13, 1 93 4 .37 July 13, 787 31 0 0.08486 13, 633 1.74 August 13, 537 31 0 0.08486 13, 633 0.68 September ... fractions for black and white infants of having the disease were 43/ 3584 and 17 /38 31. The 43 and 17 cases may be considered values of Poisson ran...
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A Methodology for the Health Sciences - part 9 pps
... together with the standard deviations determine the correlations. These data have a correlation for measurements that are one year apart of 0. 734 , 0. 733 , and 0.806. For measurements two years apart, ... observa- tions that are two visits apart have correlation ρ 2 , and in general all pairs of observations that are k visits apart have correlation ρ k . A banded correlation mat...
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A Methodology for the Health Sciences - part 10 pps
... 3. 66 3. 51 3. 43 3 .35 3. 27 3. 18 3. 09 3. 00 15 8.68 6 .36 5.42 4.89 4.56 4 .32 4.14 4.00 3. 89 3. 80 3. 67 3. 52 3. 37 3. 29 3. 21 3. 13 3.05 2.96 2.87 16 8. 53 6. 23 5.29 4.77 4.44 4.20 4. 03 3.89 3. 78 3. 69 3. 55 ... 2.59 2.82 3. 11 3. 31 3. 50 3. 75 3. 92 ∞ .67 1.28 1.65 1.96 2 .33 2.58 2.81 3. 10 3. 30 3. 49 3. 73 3.91 APPENDIX 827 Table A. 7 Fisher’...
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A Methodology for the Health Sciences - part 1 doc
... We use a capital letter for the name of a variable and the corresponding lowercase letter for a value. For example, Y = a atoxin level (the name of the variable); y = 30 (the value of a atoxin ... by the examples above, we must specify two aspects of a variable: the scale of measurement and the values the variable can take on. Some quantitative variables hav...
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A Methodology for the Health Sciences - part 2 pptx
... 15 cases born in 1977. The birthweights for the latter group are 20 13 3827 30 90 32 60 430 9 33 74 35 44 2 835 34 87 32 89 37 14 2240 2041 36 29 33 45 The mean and standard deviation of this sample are 31 99.8 ... began to walk was then reported by the mother. The data and basic calculations are shown in Table 5 .3. For purposes of this example, we assume that the...
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A Methodology for the Health Sciences - part 4 pot
... 9 .3. For the data in Table 9.4, r 2 = 36 ,464.2 53, 637 .3 = 0.679 83 That is, approximately 68% of the variation in mortality can be attributed to variation in latitude. Equivalently, the variation ... before a category with K tied observations, the average rank for the k tied observations is average rank = 2J + K + 1 2 (9) For these data, the average ranks are compu...
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A Methodology for the Health Sciences - part 5 pdf
... Buchanan. ONE-WAY ANALYSIS OF VARIANCE 36 1 10.2.2 Using the Normal Distribution Model Basic Approach The one-way analysis of variance is a generalization of the t-test. As in the motivating example above, ... make the assumptions valid. Typical transformations are: logarithmic, square root, reciprocal, and arcsin √ . These transformations are nonlinear. Linear transformations do...
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A Methodology for the Health Sciences - part 6 potx
... into halves at random. One can estimate the parameters from one-half of the data and then predict the values for the remaining unused half of the data. The evaluation of the fit can be performed ... nonsignificant, we may accept the quadratic equation as appropriate. Figure 11.5 is a scatter diagram of the data as well as the linear and quadratic curves. Note that the...
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A Methodology for the Health Sciences - part 7 potx
... [1974]. This paper considers heartbeats that have an irregular rhythm (or arrythmia). The study examined the administration of the drug procainamide and evaluated variables associated with the maximal exercise ... hoc analysis. Such an analysis is not explicitly planned at the start of the study but suggested by the data. Other terms associated with such analyses are data driven...
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A Methodology for the Health Sciences - part 8 ppt
... crude death rate among Hispanic males. (b) Calculate the crude death rate among non-Hispanic males. (c) Compare parts (a) and (b) using an appropriate test. (d) Calculate the SMR using non-Hispanic ... this approach is wasteful by throwing away valuable and needed information. This section presents an approach that allows the rates to use all the available information if certain assum...
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