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Clinical Research in Complementary and Integrative Medicine

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ISBN: 978-0-7020-3476-3

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Clinical Research in Complementary and Integrative Medicine

A Practical Training Book

By Claudia Witt, MD MBA and Klaus Linde, MD

208 pages
Trim Size 6 11/16 X 9 7/16 in
Copyright 2011
$96.95, Paperback, Reference

Availability:This title is currently out of stock. We will ship as soon as we receive our stock.

 


Description

Sie wollen eine Studie in durchführen und wissen nicht ganz genau, wie?

Kein Problem! Clinical Research zeigt Ihnen alle Aspekte verständlich und nachvollziehbar. Sie erhalten einem umfassenden Überblick und praxistaugliche Anleitungen.

Schritt für Schritt erarbeiten und üben Sie die Kriterien und - of course - all in english!

Dieses Buch hat mehr!

Mit dem Code im Buch haben Sie ab Aktivierung 12 Monate kostenlosen Online-Zugriff auf den Buchinhalt und die Abbildungen..*

* Angebot freibleibend

Key Features

This practical training book:

  • systematically introduces the key aspects of study design and basic statistics.
  • helps you to develop, plan and execute your research project.
  • combines established theoretical approaches with practical skills applicable to your own clinical study.
  • is a step-by-step tutorial for a complete clinical study, which is illustrated in three case studies.
  • includes additional training exercises, featuring different study conditions and environments, that will help you to practice and test your knowledge.

Clinical Research in Complementary and Integrative Medicine – the best way to understand clinical research and to plan and perform your own study!

Free online access:

After activating the code inside this book you get free online access to the content and the illustrations for 12 months.

Table of Contents

Contents

1 Introduction 1

1.1 What do we mean by complementary medicine in this book? 1

1.2 The science behind clinical medicine 2

1.2.1 Major areas of research 2

1.2.2 Topics in clinical research 2

1.2.3 Evidence-based medicine 3

1.3 Why do we need research on complementary therapies? 3

1.4 Is research into complementary therapies special? 5

1.4.1 Why research into complementary therapies is somewhat different? 5

1.4.2 Strategic approaches to research into complementary medicine 6

1.4.3 Why it is difficult to realize strategic approaches? 6

1.5 Aims, target audience and structure of this book 7

I Theory - Things you should know before embarking on a clinical study 9

2 Basic study design 11

2.1 When is a treatment effective? 11

2.1.1 Why do we need control or comparison groups? 11

2.1.2 Types of controls and comparisons 12

2.1.3 Specific and non-specific effects 14

2.2 Bias - threats to internal validity 15

2.2.1 Prognostic and baseline differences between groups - why randomization is so desirable 15

2.2.2 Differences between groups after treatment has started - why blinding is so desirable 17

2.2.3 Attrition 17

2.2.4 Bias during analysis and reporting 18

2.3 Clinical studies and the real world - external validity 18

2.3.1 The need for balancing internal and external validity 18

2.3.2 Selection of study participants 20

2.3.3 Selection of study interventions 21

2.3.4 Selection of outcome measures 22

2.4 What study design for what purpose? 22

2.4.1 Studies without a control group 22

2.4.2 Studies with a non-randomized comparison group 25

2.4.3 Randomized trials 27

2.5 Establishing an evidence picture 31

3 Basic statistics 33

3.1 Why statistics? 33

3.2 Types of variables and their distribution 33

3.2.1 Categorical variables 33

3.2.2 Continuous variables 34

3.2.3 Categorical or continuous? 34

3.3 Summarizing your data 34

3.3.1 Calculating the mean and the median 35

3.3.2 The distribution of your data 35

3.3.3 Measuring variation within your study population 36

3.3.4 Measuring sampling variation 37

3.3.5 Standard deviation, standard error and confidence interval 38

3.4 Comparing two groups or two time points for one variable 38

3.4.1 Calculating summary measures for dichotomous variables 38

3.4.2 Calculating summary measures for continuous variables 39

3.4.3 Testing a hypothesis 40

3.4.4 Relevance of the p-value 41

Contents

3.4.5 Statistical tests for comparing means 42

3.4.6 Statistical tests for comparing proportions 42

3.4.7 Confidence intervals 42

3.4.8 Type I and type II errors 43

3.4.9 How to deal with multiple testing 43

3.5 Comparing more than two groups for one variable 44

3.5.1 Statistical models and tests for comparing more than two groups for one variable 44

3.6 Comparing two or more groups for more than one variable 45

3.6.1 Correcting for baseline differences 45

3.6.2 Logistic regression and statistical modelling 45

3.7 Analysis populations 46

3.8 Dealing with missing values 46

3.9 Interval hypotheses: equivalence/non-inferiority and superiority 47

II Practice - Planning, managing, analyzing and publishing a clinical study 49

4 Planning 51

4.1 Formulating the research question 51

4.1.1 Why a clear research question is so crucial 51

4.1.2 Practical steps 51

4.1.3 Case studies 54

4.2 Study Protocol 56

4.2.1 What is a study protocol? 56

4.2.2 Develop your study protocol - step by step 56

4.3 Interventions and Controls 59

4.3.1 Theoretical background 59

4.3.2 Define your control and interventions 62

4.3.3 Case studies 64

4.4 Randomization 65

4.4.1 Individual and cluster randomization 65

4.4.2 Practical steps 66

4.4.3 Case studies 70

4.5 What to do if you do not randomize 71

4.5.1 Taking baseline differences into account 72

4.5.2 Matching - practical steps 72

4.5.3 Adjusting analyses for imbalances - practical steps 73

4.5.4 Case study 74

4.6 Blinding 74

4.6.1 Should you go for blinding? 74

4.6.2 Practical steps 76

4.6.3 Case studies 79

4.7 Study participants 81

4.7.1 Who should be included in your study? 81

4.7.2 Practical steps 81

4.7.3 Case studies 83

4.8 Outcome measurement 85

4.8.1 Theoretical background 85

4.8.2 Define your outcome measures and prepare your CRF 89

4.8.3 Case studies on outcomes 91

4.9 Sample size calculation 93

4.9.1 What does sample size calculation mean? 93

4.9.2 Practical steps 94

4.9.3 Case studies 100

4.10 Ethics and regulatory aspects 102

4.10.1 Theoretical background on ethics 102

4.10.2 Getting approval from the IRB/Ethics Committee 103

4.10.3 Regulatory aspects 104

5 Study and data management 105

5.1 Project management 105

5.1.1 Phases of project management 105

5.1.2 Taking notes 105

5.2 Guidelines for clinical trials 106

5.3 Study management 107

5.3.1 Theoretical background 108

5.3.2 Manage your study 109

5.4 Data management 113

5.4.1 Theoretical background 113

5.4.2 Manage your data 116

5.5 Case studies 121

6 Data analysis 123

6.1 Analysing your own data step by step 123

6.1.1 Step 1: Define the analysis populations and the handling of missing values 123

6.1.2 Step 2: Identify the different types of variable 124

6.1.3 Step 3: Clarify what you can calculate from your data 124

6.1.4 Step 4: Choose suitable statistical methods 125

6.1.5 Step 5: Perform the statistical analysis 126

6.1.6 Step 6: Decide how you will present your results 127

6.1.7 Step 7: Interpret your results and draw your conclusions 127

6.2 Case studies 127

7 Publication 133

7.1 General issues 133

7.1.1 Why is publication so crucial? 133

7.1.2 Basic things to keep in mind 133

7.2 Early preparatory work 134

7.2.1 Define your aims 134

7.2.2 Deciding on authorship 134

7.2.3 Selecting a journal 135

7.2.4 Checking instructions for authors 137

7.2.5 Checking general guidelines for reporting 137

7.3 Writing the manuscript 137

7.3.1 Results section 138

7.3.2 Methods section 138

7.3.3 Introduction 139

7.3.4 Discussion 139

7.3.5 Abstract 140

7.3.6 References 140

7.3.7 Additional statements 140

7.3.8 Internal revision 141

7.4 Getting your manuscript accepted 141

7.4.1 Preparing the submission 141

7.4.2 Submitting the manuscript 142

7.4.3 What happens at the journal? 142

7.4.4 Revision 143

7.4.5 After rejection … 143

7.5 After acceptance 144

7.5.1 Proofreading 144

7.5.2 Finally: Publication 144

7.5.3 Dealing with mass media 144

III Putting a clinical study into context 145

8 Qualitative research 147

8.1 Research question and examples 147

8.2 Qualitative approaches 148

8.2.1 Ethnography 148

8.2.2 Field research 148

8.2.3 Case studies 149

8.3 Qualitative methods and types of data 149

8.3.1 Interviews 149

8.3.2 Observation 149

8.3.3 Written

Author Information

By Claudia Witt, MD MBA, Professor of Medicine and Vice Director, Institute for Social Medicine, Epidemiology and Health Economics, Charite University Medical Center, Berlin, Germany and Klaus Linde, MD, Professor for Medicine and scientific coordinator of the Institute of General Practice, Technical University Munich.

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