5,468 rated or chosen profiles from 926 respondents, in up to 3 tasks of 2 profiles varying on 5 attributes.
| Description | Choice experiment: 926 Pacific Northwest households (2017 mail survey, Oregon oversampled) chose between the status quo and two Oregon Coast Coho salmon recovery programs (ESA status, returning fish, rate of increase, fishing regulations, annual cost); up to 3 questions each. |
|---|---|
| Reference | Lewis, D. J., Dundas, S. J., Kling, D. M., Lew, D. K., & Hacker, S. D. (2019). The non-market benefits of early and partial gains in managing threatened salmon. PLOS ONE, 14(8), e0220260. |
| DOI | 10.1371/journal.pone.0220260 |
| Licence | CC BY 4.0 |
| Source data | https://doi.org/10.6084/m9.figshare.7869299 |
These notes describe the source data, which the IRW reproduces as released. All notes are listed on the Data Notes page.
| Respondents | 926 |
|---|---|
| Rows (one per respondent, task and profile) | 5,468 |
| Tasks per respondent (most) | 3 |
| Profiles per task | 2 |
| Attributes | 5 |
| Tasks with no profile chosen | 425 |
| Topic | climate energy environment |
|---|---|
| A profile represents | policy |
| Country | US |
| Language shown | en |
| Language of stored levels | en |
| Randomization restrictions | yes (stated by the source): The paper uses a D0-optimal design with permissible combinations of attribute levels only (S1 Text Table A, not read); e.g. an ESA status of Threatened never occurs with 525,000 fish and Endangered never with 250,000. |
| Task order | inferred from row order |
| Profile position | recorded in the deposit |
Because the attribute levels were not randomized independently, an estimator has to account for the restriction; a plain difference in means across levels can mislead. Task order or profile position was rebuilt from row order; analyses of position or task order should leave it out.
Outcomes:
| choice | Choose the status quo, program A or program B (paraphrase) [choice, opt-out allowed] |
|---|
attr_annual_costattr_esa_statusattr_fishing_regulationsattr_rate_of_increaseattr_returning_fish_50yrchoicecov_agecov_ever_fishedcov_gendercov_household_income_usdcov_statecov_survey_weightidprofiletask
The layout (one row per respondent, task and profile; choice/rating outcomes; attr_ columns holding each attribute level as displayed) is defined in the IRW conjoint standard. What the outcomes asked is under Design above.
Or load it directly in R or Python (both need a free Redivis account; the first call opens a browser to sign in):
# R
install.packages("remotes")
remotes::install_github("itemresponsewarehouse/Rpkg")
library(irw)
df <- irw_fetch("lewis_2019_coho_salmon", source = "conj")
# Python
pip install irw
import irw
df = irw.fetch("lewis_2019_coho_salmon", source="conj")
@article{Lewis_2019, title={The non-market benefits of early and partial gains in managing threatened salmon}, volume={14}, ISSN={1932-6203}, url={http://dx.doi.org/10.1371/journal.pone.0220260}, DOI={10.1371/journal.pone.0220260}, number={8}, journal={PLOS ONE}, publisher={Public Library of Science (PLoS)}, author={Lewis, David J. and Dundas, Steven J. and Kling, David M. and Lew, Daniel K. and Hacker, Sally D.}, editor={Espinola-Arredondo, Ana}, year={2019}, month=Aug, pages={e0220260} }
| IRW version | v584 |
|---|---|
| Redivis dataset | irw_conjoint_2 v1.4 |
| Redivis dataset DOI | 10.57761/hk97-wv30 |
| Manifest pin for this IRW version | v1.4 |
| Metadata source | irw_meta v44.0 |