|
Effect of respondent characteristics and initial bids on time-tradeoff amounts |
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| Variable |
Type of variable |
Impact on TTO |
95 % CI |
P value |
|
|
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| Independent variables: |
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| TTO amounts1 |
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| Dependent variables: |
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| Baseline2 |
Constant |
0.5545 |
(0.2402, 1.2798) |
0.1617 |
| Age3 |
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| 18–34 |
Binary |
1.0385 |
(0.4904, 2.1994) |
0.9200 |
| 35–49 |
Binary |
1.1698 |
(0.6299, 2.1723) |
0.6137 |
| 50–64 |
Binary |
1.5448 |
(0.7921, 3.0129) |
0.1959 |
| Female |
Binary |
0.8629 |
(0.5926, 1.2565) |
0.4342 |
| Education: Some college or less |
Binary |
1.1579 |
(0.7537, 1.7789) |
0.4966 |
| Not married |
Binary |
0.9204 |
(0.5815, 1.4569) |
0.7188 |
| Health (Worse than average) |
Binary |
1.1043 |
(0.7343, 1.6606) |
0.6279 |
| No children under 18 in household |
Binary |
0.7663 |
(0.4541, 1.2930) |
0.3114 |
| Version (initial bid)4 |
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| 1 (1 week) |
4 binary variables, one for each initial bid |
2.8454 |
(1.7138, 4.7242) |
<0.0001 |
| 2 (1 month) |
1.3331 |
(0.7943, 2.2374) |
0.2694 |
|
| 3 (2 weeks) |
1.4705 |
(0.8741, 2.4739) |
0.1415 |
|
| Income (less than 3X poverty level) |
Binary |
1.0092 |
(0.5398, 1.8870) |
0.9766 |
| Number of disease experienced: None |
Binary (0 v. 1 or more) |
1.2406 |
(0.7396, 1.9394) |
0.3370 |
|
1 Independent variables included for each respondent were uncomplicated influenza in a 1-year-old, uncomplicated influenza in a 14 year-old, and anaphylaxis or Guillain-Barré syndrome. R-squared = 0.2194. 2 Baseline refers to a person over 65 years of age, male, college graduate, married, good health, with income three times or greater than poverty level, children under 18 living in the household, familiar with at least one of the conditions in the survey, and responding to survey version 4 (initial bid of 6 months). 3 Compared to 65 and over. 4 Compared to version 4 (initial bid of 6 months). | ||||
Prosser et al. Health and Quality of Life Outcomes 2005 3:18 doi:10.1186/1477-7525-3-18 |
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