Sample size estimation and power calculations
Oct 12, 2017 10:00 AM
End: Oct 12, 2017 04:30 PM
12th Oct, 2017: This one day course gives the basics of sample size estimation. It will be of use to those embarking on a research project and who are perhaps trying to complete ethics and grant application forms. Both precision and power estimation approaches are covered.
The concepts of sample size estimation are introduced, including when and why this might be necessary. Formulae are presented and discussed. An accompanying weblink is introduced which hosts excel sheets pre-programmed to facilitate use of the formulae. In the morning the precision-based approach to sample size estimation is introduced, whereby the numbers are selected to produce a confidence interval for the relevant estimate with a specified width. In the afternoon we progress to the more traditional power calculations that aim to give the sample required to determine a specified difference with selected power and significance levels. All terminology will be explained as it is introduced in the sessions.
Sample size estimation is discussed for the following measurements:
- Proportions/ percentages
- Time to event data
- Measures of agreement
This workshop will take place in a computer room where applicants will have the opportunity to use the computers provided in order to gain full benefit from the workshop practical exercises that utilize the excel sheets. Alternatively, individuals are welcome to bring their own laptop computers if they prefer (required software Excel or compatible with Excel).
All CASC courses take place in central London, in or close to the Institute of Child Health. Specific details of the course venue will be supplied after registration.
- Fees & Registration
External Delegates (Non-UCL) £175.00
UCL Staff, Students, Alumni £87.50 *
ICH/GOSH Staff and Doctoral Students FREE †
* Valid UCL email address and/or UCL alumni number required upon registration. Please note, this category does not include hospital staff unless you hold an official contract with the university.
† Limited free spaces available. If there are no free places remaining, ICH/GOSH Staff and Doctoral Students can still register at the UCL rate.
Prices include printed course materials, refreshments (and lunch for non-ICH/GOSH participants 12.45pm - 1.45pm)
Please note that no refunds will be given for cancellations made within five working days of the course start date or for non-attendance, and for individuals attending the course on a funded place, a fee will be charged for late cancellation/non-attendance according to the same time frame. This fee is needed to cover printing, catering, etc. costs that are ordered no later than 5 days before the course and are based on the number of people registered at that point in time.
- Future dates
Dates Time Cost Apply 12th Oct, 2017
10.00am – 4.30pm
Click to register 24th Nov, 2017 10.00am – 4.30pm £175*† Click to register 29th Jan, 2018 10.00am – 4.30pm £175*† TBC 24th May, 2018 10.00am – 4.30pm £175*† TBC
*Cost for external participants.
†Price includes printed course materials, refreshments (and lunch for non-ICH/GOSH participants 12.45pm - 1.45pm)
“Excellent as always. This is my 6th course and all were extremely useful and relevant"
"Very good course and exactly what I needed. Course material is very good though and will be a helpful reminder in the future.”
"Really well paced course, very useful being provided with the excel spreadsheets, friendly and experienced staff, highly recommend all of these courses!”
"I really like the courses because they are well explained and the material is clear.”
"I really enjoyed the training session. I can say that the course is timely because I am developing a proposal where I would apply the knowledge gained in this training to calculate my sample size for the study. Keep it up”