Ebrahim Jahanshiri
2013-Jul-25 12:01 UTC
[R] Computing "standard error of the mean" using REML
Let say we have different samples taken from the same population (I am talking about soil samples and different schemes of sampling) and now we want to compare the accuracy of samples using standard error of mean. I have been asked to compute standard error of the mean of samples using "residual maximum likelihood (REML)" however, I couldn't find any function in R to do it. All I could find were the function "lmerTest" that do maximum likelihood for the fixed effects modelling but not for computing the "standard error of the mean". I would appreciate any clue. EJ [[alternative HTML version deleted]]
Jose Iparraguirre
2013-Jul-25 12:33 UTC
[R] Computing "standard error of the mean" using REML
Dear Ebrahim, We do not deal with study or work assignments in this group. I'd suggest, nonetheless, to look into the lme4 package and the mer-class objects created with this package. Regards, Jos? Prof. Jos? Iparraguirre Chief Economist Age UK -----Original Message----- From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Ebrahim Jahanshiri Sent: 25 July 2013 13:01 To: r-help at r-project.org Subject: [R] Computing "standard error of the mean" using REML Let say we have different samples taken from the same population (I am talking about soil samples and different schemes of sampling) and now we want to compare the accuracy of samples using standard error of mean. I have been asked to compute standard error of the mean of samples using "residual maximum likelihood (REML)" however, I couldn't find any function in R to do it. All I could find were the function "lmerTest" that do maximum likelihood for the fixed effects modelling but not for computing the "standard error of the mean". I would appreciate any clue. EJ [[alternative HTML version deleted]] ______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. The Wireless from Age UK | Radio for grown-ups. www.ageuk.org.uk/thewireless If you?re looking for a radio station that offers real variety, tune in to The Wireless from Age UK. Whether you choose to listen through the website at www.ageuk.org.uk/thewireless, on digital radio (currently available in London and Yorkshire) or through our TuneIn Radio app, you can look forward to an inspiring mix of music, conversation and useful information 24 hours a day. ------------------------------- Age UK is a registered charity and company limited by guarantee, (registered charity number 1128267, registered company number 6825798). Registered office: Tavis House, 1-6 Tavistock Square, London WC1H 9NA. For the purposes of promoting Age UK Insurance, Age UK is an Appointed Representative of Age UK Enterprises Limited, Age UK is an Introducer Appointed Representative of JLT Benefit Solutions Limited and Simplyhealth Access for the purposes of introducing potential annuity and health cash plans customers respectively. Age UK Enterprises Limited, JLT Benefit Solutions Limited and Simplyhealth Access are all authorised and regulated by the Financial Services Authority. ------------------------------ This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you receive a message in error, please advise the sender and delete immediately. Except where this email is sent in the usual course of our business, any opinions expressed in this email are those of the author and do not necessarily reflect the opinions of Age UK or its subsidiaries and associated companies. Age UK monitors all e-mail transmissions passing through its network and may block or modify mails which are deemed to be unsuitable. Age Concern England (charity number 261794) and Help the Aged (charity number 272786) and their trading and other associated companies merged on 1st April 2009. Together they have formed the Age UK Group, dedicated to improving the lives of people in later life. The three national Age Concerns in Scotland, Northern Ireland and Wales have also merged with Help the Aged in these nations to form three registered charities: Age Scotland, Age NI, Age Cymru.
Colleagues, Is there any R package that will allow one to perform a repeated measures Cox Proportional Hazards regression? I don't think coxph is set up to handle this type of problem, but I would be happy to know that I am not correct. I am doing a study of time to hip joint replacement. As each person has two hips, a given person can appear in the dataset twice, once for the left hip and once for the right hip, and I need to account for the correlation of data from a single individual. Thank you, John John David Sorkin M.D., Ph.D. Professor of Medicine Chief, Biostatistics and Informatics University of Maryland School of Medicine Division of Gerontology Baltimore VA Medical Center 10 North Greene Street GRECC (BT/18/GR) Baltimore, MD 21201-1524 (Phone) 410-605-7119 (Fax) 410-605-7913 (Please call phone number above prior to faxing) Confidentiality Statement: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message.