Brief Description of the Surveillance, Epidemiology & End Results (SEER)-Medicare Health Outcomes Survey (MHOS)-Level Analysis File
The following is a brief description about how the analysis file was created,
who is included in the file, the structure of the file, and the content of the
file. For ease of reference, variable names are included in parentheses.
The SEER-MHOS is a survey-level analysis file organized chronologically,
based on the earliest survey administration date. The file includes all
Medicare Advantage enrollees from Cohorts 1 to 8 that have completed at least
one MHOS. Up to twelve records per person may be available in this file. This
would occur for enrollees who were included in the MHOS sample every year, and
responded to all eight baseline and follow-up surveys. The survey records are
arranged chronologically starting with the earliest completed survey, and
include the survey date (SRVDATE).
The survey-level file includes information for people with and without
cancer. The variable (INSEER) identifies MHOS respondents who were found in the
SEER file and were diagnosed with cancer between 1973 and 2007. Dates of
diagnosis and clinical information, for up to 10 cancer sites, from the SEER
file are included in each survey record that belongs to SEER-linked respondents.
A number of variables were calculated to describe the timing of the survey
relative to cancer diagnosis including the patient's cancer status at the time
of the survey (CASTAT). These variables can be used to select a subset of
respondents or surveys based on pre/post-cancer diagnosis; for example,
selecting number of cancers before survey equal to 0 (NUMCABEF = 0) will keep
only surveys prior to any cancer diagnosis. For more examples, refer to Sample SAS Code for Patient and Survey
Selection. The SEER variables were copied from the SEER-Medicare file (PEDSF)
and are described in Appendix A of the Data Dictionary.
The file also contains demographic information obtained from sources
including the Enrollment Database (EDB) maintained by Centers for Medicare &
Medicaid Services (CMS), SEER file, and self-reported information. Selected
Census 2000 data at the census tract and zip code levels around the time of
first cancer diagnosis were added to the survey record. In addition, zip
code-level census data at the time of the survey were added to the record. SF-36
scales, as well as, physical and mental summary scores are provided on the
T-score metric; for Cohorts 1-6 Baseline and Follow up Cohorts 7-8 Follow up. For more information, refer to How to Use the SF-36 Measures. For 2006 survey years and later, physical and mental summary scores are provided based on the Veterans Rand (VR-12), but the SF-36 scales and T-scores are no longer available. In addition, VR-12 equivalent scores were calculated for Cohorts 1-6 Baseline and Follow up and Cohorts 7-8 Baseline.
For each data request, the file will be subset on respondents with the
requested cancer site. Respondents may have more than one cancer site, and
information for up to 10 sites is stored in an array for each SEER data item.
The variable (CAINDX) indicates the number of the array element (1-10) which
corresponds to the requested cancer site.
|