Bootstrap Weights with the CCHS 2015-2016

Question:

A researcher is using the Bootstrap weights with the CCHS 2015-2016 and has the following question:

“I am conducting data analysis in STATA using the bootstrap weights, and one of the parameters for the function is bsn, which "specifies that # bootstrap replicate-weight variables were used to generate each bootstrap mean-weight variable specified in the bsrweight() option of svyset. The default is bsn(1)".  Do you know what the bsn number is for the CCHS 2015-2016 file?  I found documentation from CCHS 2013 which stated the bsn number was 500, but I cannot find any similar documentation for CCHS 2015-2016.”

Answer:

For the 2015-2016 CCHS file there are 1000 bootstrap replicates, this should be for your degrees of freedom (DOF) in STATA.

For the BSN, the CCHS uses the Rao-Wu-Yue bootstrap to estimate the variance. In this variant of the bootstrap, a single bootstrap weight is used to generate each bootstrap weight.

So the default value of 1 should be used. ( BSN(1) )

Bootstrap weights for CCHS 2013-2014 PUMF?

Question
A faculty member is looking to teach the use of bootstrap weights with the Canadian Community Health Survey 2013-2014 file, and is having a not-so-minor difficulty: the bootstrap weights aren’t present on the file.

Were they created, and can they be released?

Answer
The CCHS team has confirmed that the CCHS 2013-2014 PUMF does not contain bootstrap weights. The masterfile does contain bootstrap weights.

Answer (2)
“Here is the response from methodology:

‘The standard type of bootstrap weights used for household surveys are the Rao-Wu-Yue bootstrap weights. These are what are on the master file. The issue is that when we do the “resampling” required in producing bootstrap weights it has to be done within a group of units. With how the CCHS is designed this group has to be a geographic grouping for much of the sample. As a result, the bootstrap weights have some imbedded geographical information within them. For that reason, Statistics Canada does not allow these type of bootstrap weights on the PUMFs. It is not a CCHS issue, this is policy to maintain confidentiality of respondents on publicly available data. Research has been conducted into using a different type of bootstrap weight as new methodologies are being created. And it may be that in the future that will be available to users.’

The CCHS team had a good suggestion. We could give the faculty member access to the dummy file, which is a full set of microdata and documentation with bootstrap weights. It isn’t real survey data, but would be very useful for teaching a class on how to use bootstrap weights.”

Residential Telephone Service Survey (RTSS) 2007 - bootstrap files available

The bootstrap file and the bootstrap SAS file for the 2007 Residential Telephone Service Survey (RTSS) that were recently removed from the DLI FTP and website have been re-loaded on to these sites are are once again available for download. Management in the division that produces these bootstrap files has approved their release. We apologize for any inconvenience this change has caused you.

FTP: /DissFTP/dli/DLI Collection- **except Census; Geography and Trade**/Residential Telephone Service Survey - rtss/2007/12/data
rtss200712dat_bootstrap.zip

/DissFTP/dli/DLI Collection- **except Census; Geography and Trade**/Residential Telephone Service Survey - rtss/2007/12/doc
estr200712rcl_bootstrap.sas
rtss200712rcl_bootstrap.sas

Web: http://www.statcan.gc.ca/dli-ild/data-donnees/ftp/rtss-estr/rtss-estr200712-eng.htm

Survey of Older Workers Bootstrap Files

Survey of Older Workers (SOW) 2008 - bootstrap files removed

The bootstrap file and the bootstrap SAS file for the 2008 Survey of Older Workers have been removed from the DLI FTP and website. The bootstrap files were not approved by the Microdata Release Committee for release. Please remove these files from your local collections.