Preface Acknowledgments About the Author PART I. Research Design and Sampling Chapter 1: Reviewing the Literature: Why? For Whom? How? What is a Research Literature Review? Why Do One? Gaining Control: Experiments and Observations Systematic, Explicit, Comprehensive, and Reproducible: Four Key Words Choosing an Online Bibliographic Database How Do You Ask for Information? Searching With Boolean Operators Pausing during the Search Changing the Course of the Search Supplementing the Online Search Organizing the Research Literature: Building a Virtual Filing Cabinet Chapter 2: Searching and Screening: The Practical Screen and Methodological Quality Search Screen 1: The Practical Screen Search Screen 2: Methodological Quality Screening Criteria Observational Designs in Brief A Note on Other Designs and Studies: Cross-Sectional Surveys and Consensus Statements Internal and External Validity Criterion for Quality: Sampling The Sampling Unit The Size of the Sample Response Rate PART II. Data Collection, Interventions, Analysis, Results, and Conclusions Chapter 3: Searching and Screening: Methodological Quality Data Collection and Data Sources: Methods and Measures Interventions and Programs: Reviewing the Research Literature to Find out What Works Data Analysis: Statistical Methods in the Research Literature Accounting for Impact Chapter 4: Doing the Review: A Reader’s Guide Chapter Types of Information: Methods and Content Eligibility and Actuality Reporting Standards: Checklists for Research Writing and Reviewing How TREND Was Used in a Literature Review Reliable and Valid Reviews Uniform Data Collection: The Literature Review Survey Questionnaire Uniform Data Collection: Definitions and More Pilot Testing the Review Process Establishing Validity Monitoring Quality Chapter 5: What Did You Find? Synthesizing Results Now that You Have Done It, What Do You Do With It? Descriptive Syntheses or Reviews Meta-Synthesis Meta-Analysis Meta-Analyses in Practice: Examples Glossary Author Index Subject Index