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The Stata Journal
Volume 21 Number 3: pp. 575-601



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Power and sample-size calculations for trials that compare slopes over time: Introducing the slopepower command

Stephen Nash
Department of Infectious Disease Epidemiology
London School of Hygiene and
Tropical Medicine
London, UK
[email protected]
Katy E. Morgan
Department of Medical Statistics
London School of Hygiene and
Tropical Medicine
London, UK
[email protected]
Chris Frost
Department of Medical Statistics
London School of Hygiene and
Tropical Medicine
London, UK
[email protected]
Amy Mulick
Department of Non-communicable
Disease Epidemiology
London School of Hygiene and
Tropical Medicine
London, UK
[email protected]
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