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39 Pages

Biostatisticswang

Course: HSC 19730, Fall 2009
School: USF
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Word Count: 1397

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to Introduction Biostatistics Tao Wang Department of Epidemiology and Biostatistics College of Public Health University of South Florida September 20, 2005 Outline Data example Variable and distribution Descriptive statistics and sampling distribution Inferential statistics Estimation, hypothesis testing and confidence interval Continuous: Correlation and regression Categorical: Chi-square test...

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to Introduction Biostatistics Tao Wang Department of Epidemiology and Biostatistics College of Public Health University of South Florida September 20, 2005 Outline Data example Variable and distribution Descriptive statistics and sampling distribution Inferential statistics Estimation, hypothesis testing and confidence interval Continuous: Correlation and regression Categorical: Chi-square test Association Breast cancer example Study on whether age at first child birth is an important risk factor for breast cancer (BC). Age BC 30 683 (21.2%) 1498 (14.6%) 2181 29 2537 8747 11284 Total 3220 10245 13465 case control Total (MacMahon, B. et al., 1970, Rosner, B. 1995, p346) Blood pressure example How does taking Oral Conceptive (OC) affect Blood Pressure (BP) in women paired samples Systolic blood pressure Baseline (Not 1-year (Using Subject i using OC) OC) 1 115 128 2 112 115 3 107 106 4 119 128 5 115 122 6 138 145 7 126 132 8 105 109 9 104 102 10 115 117 Difference 13 3 -1 9 7 7 6 4 -2 2 (Rosner, B. 1995, p253) Birthweight Example Determine the effectiveness of drug A on preventing premature...
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