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Supplemental Information

Comparison of n-butanol olfactory threshold score distributions for participants of East Asian, European and South Asian ancestry (n = 60, 55 and 58, respectively)

DOI: 10.7287/peerj.preprints.529v1/supp-2

Power analysis results in a range of beta (ppb) values and allele frequencies for the genetic association testing of SNPs and olfactory sensitivity, assuming an additive model

DOI: 10.7287/peerj.preprints.529v1/supp-3

Additional Information

Competing Interests

The authors declare they have no competing interests.

Author Contributions

Gillian R Cook conceived and designed the experiments, performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

S. Krithika performed the experiments.

Melissa Edwards performed the experiments.

Paula Kavanagh performed the experiments.

Esteban J Parra conceived and designed the experiments, contributed reagents/materials/analysis tools, wrote the paper, reviewed drafts of the paper.

Human Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

The research protocol was approved by the University of Toronto Research Ethics Board, Protocol # 27015


This work was supported by an NSERC (Natural Sciences and Engineering Research Council of Canada) Discovery Grant to E.J.P., and a Canada Graduate Scholarship-Master’s to G.R.C. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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