Risk factors for measles among adults in Tianjin, China: Who should be controls in a case-control study?
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DOI: 10.1371/journal.pone.0185465
Abstract: Background Control groups in previous case-control studies of vaccine-preventable diseases have included people immune to disease. This study examines risk factors for measles acquisition among adults 20 to 49 years of age in Tianjin, China,… read more here.
Keywords: igg negative; negative controls; risk; control ... See more keywords
Case-Control Study of Rotavirus Vaccine Effectiveness Compared to Test-Negative Controls or Hospital Controls
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DOI: 10.2188/jea.je20180054
Abstract: Background Selection of test-negative controls takes less time and costs less than traditional control selection for evaluating vaccine effectiveness (VE). Here, rotavirus VE was evaluated using hospital controls and compared with test-negative controls to determine… read more here.
Keywords: control; negative controls; test negative; hospital controls ... See more keywords
Influenza Vaccine Effectiveness Estimates among US Department of Defense Adult Beneficiaries over Four Consecutive Influenza Seasons: A Test-Negative Design Study with Different Control Groups
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DOI: 10.3390/vaccines10010058
Abstract: A test-negative design study with different control groups (influenza test-negative controls, non-influenza virus positive controls, and pan-negative controls) was conducted to assess inactivated influenza vaccine effectiveness (VE) in adults aged ≥18 years, 2016–2017 through 2019–2020… read more here.
Keywords: influenza seasons; design study; test negative; influenza ... See more keywords