6,392 rated or chosen profiles from 799 respondents, in up to 4 tasks of 2 profiles varying on 4 attributes.

About this table

Description	Choice experiment: 799 Malaysian household heads chose between two refrigerators (energy star rating, annual energy cost, annual energy saving, price in RM) or a no-option, in 4 choice sets each.
Reference	Kamaludin, M., Razali, M. A. S., Haron, N. F., Abd Aziz, A., & Samdin, Z. (2025). Household preferences towards energy labels in Malaysia: A pathway to sustainability. Journal of Sustainability Science and Management, 20(1), 1-22.
DOI	10.46754/jssm.2025.01.001
Licence	CC BY 4.0
Source data	https://doi.org/10.17632/5bhwp4t8xb.1

Notes

Conjoint table (irw_conjoint_2). Choice of Option A, Option B or a no-option (opt-out, 171 of 3,196 sets) in 4 sets per respondent; refrigerators vary in energy star rating (2-5 star), energy consumption cost per year (RM132.70-RM67.98), energy saving per year (none or RM26.50/47.78/64.72) and price (RM950/1,400/2,000). Level text is the article's Table 1 wording mapped by code order (the deposit stores 1-4); level shares are unequal although the article calls the design balanced.

These notes describe the source data, which the IRW reproduces as released. All notes are listed on the Data Notes page.

Size and shape

Respondents	799
Rows (one per respondent, task and profile)	6,392
Tasks per respondent (most)	4
Profiles per task	2
Attributes	4
Tasks with no profile chosen	171

Design

Topic	consumer products, climate energy environment
A profile represents	product service
Country	MY
Language shown	unknown
Language of stored levels	en
Task order	recorded in the deposit
Profile position	recorded in the deposit

Outcomes:

choice	Please tick your choice among Option A, Option B and no-option (article Table 2) [choice, opt-out allowed]

Columns

attr_energy_consumptionattr_energy_savingattr_energy_starattr_pricechoicecov_agecov_education_codecov_gender_codecov_income_resp_rmidprofiletask

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.

Get the data

Download CSVno account needed Browse on Redivisexplore and query Croissant metadataHugging Face, Kaggle, OpenML

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("kamaludin_2025_refrigerator_energy_label", source = "conj")

# Python
pip install irw

import irw
df = irw.fetch("kamaludin_2025_refrigerator_energy_label", source="conj")

How to cite

@article{2025, title={HOUSEHOLD PREFERENCES TOWARDS ENERGY LABELS IN MALAYSIA: A PATHWAY TO SUSTAINABILITY}, volume={20}, ISSN={2672-7226}, url={http://dx.doi.org/10.46754/jssm.2025.01.001}, DOI={10.46754/jssm.2025.01.001}, number={1}, journal={JOURNAL OF SUSTAINABILITY SCIENCE AND MANAGEMENT}, publisher={Penerbit UMT, Universiti Malaysia Terengganu}, author={ and KAMALUDIN, MAHIRAH and SHAH RAZALI, MUHAMMAD AZRIN and HARON, NAZATUL FAIZAH and ABD AZIZ, AZLINA and SAMDIN, ZAITON and }, year={2025}, month=Jan, pages={1–22} }

Version and provenance

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