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. Author manuscript; available in PMC: 2017 Mar 9.
Published in final edited form as: Curr Med Res Opin. 2016 Dec 8;33(2):391–400. doi: 10.1080/03007995.2016.1257983

Table 1.

Variable definition and measurement used in the analysis.

Variable name Definition and measurement
VR-6D index A single utility index generated from VR-12
Radiation therapy 1 if the patient received radiation therapy after BCS,
  otherwise 0
Race 0 if the patient was white
1 if the patient was black
2 if the patient was not white nor black (others)
Marital status 0 if the patient was unmarried (single, divorced,
  and widowed)
1 if the patient was married
Age at diagnosis 0 if the patient age was 65–69 years
1 if the patient age was 70–74 years
2 if the patient age was 75–79 years
3 if the patient age was 80 years or older
Tumor grade 0 if the tumor was well differentiated
1 if the tumor was moderately differentiated
2 if the tumor was poorly differentiated or
  undifferentiated
Education 0 if the patient was high-school graduate or less
  (≤high school)
1 if the patient had some college degree or 2 years
  degree
2 if the patient was college graduate or higher
Comorbidity 0 if the patient had no comorbidity
1 if the patient had 1–2 comorbidities
2 if the patient had >2 comorbidities
Proxy If the survey was completed by a third party, i.e.
  not self-reported
0 if the survey was completed by the patient herself
1 if the survey was completed by a third party
Time from cancer
  diagnosis to survey
0 if time from cancer diagnosis was ≥0 months but
  <7 months
1 if time from cancer diagnosis was ≥7 months but
  <12 months
2 if time from cancer diagnosis was ≥13 months
  but <19 months
Time from diagnosis
  to treatment
0 if time from diagnosis to treatment <2 months
1 if time from diagnosis to treatment is ≥2 months
Area of residence 0 if the women reside in non-metro area at the
  time diagnosis
1 if the women reside in metro area at the time of
  diagnosis
Year of diagnosis The year the patient diagnosis breast cancer