"Cognitive function and mood at high altitude following acclimatization and use of supplemental oxygen and adaptive servoventilation sleep treatments" Erica C. Heinrich, Matea A. Djokic, Dillon Gilbertson, Pamela N. DeYoung, Naa-Oye Bosompra, Lu Wu, Cecilia Anza-Ramirez, Jeremy E. Orr, Frank L. Powell, Atul Malhotra, Tatum S. Simonson PLOS One, 2019. For details about the data analysis please contact Erica Heinrich: erica.heinrich@medsch.ucr.edu These data were analyzed in R Studio Version 1.2.1297 on Windows 10. https://www.rstudio.com/ Study data were collected and managed using REDCap electronic data capture tools hosted at the University of California, San Diego. We used two-way mixed linear models with repeated measures via the “lme4” package in R Studio (R Studio, Inc.) to investigate effects of day at altitude (1, 2, 3; day 0 being day of arrival) and treatment (no treatment, ASV, oxygen) on cognitive function test and mood scores. Two-way analysis of variance (type III sum of squares) tests were run on these models and post-hoc Tukey tests were used to determine significant differences across days and/or treatments when models indicated a significant effect of treatment or day at altitude on a measurement. https://cran.r-project.org/web/packages/lme4/lme4.pdf The dataset contains missing values for one subject who did not complete the “no-treatment” night at high altitude (exclude subject 2, NT on day2). Paired t-tests were completed on the remaining 17 subjects with complete sea-level and “no-treatment” high-altitude data to determine the effects of altitude itself on test scores. P-value corrections for multiple comparisons were not used due to the study’s limited sample size. The file high_altitude_cognition_data.csv includes results of all cognitive function tests, AMS Scores, and sleep quality data reported in Heinrich et al. 2019 (missing sleep data for 4 individuals with polysomnography equipment malfunction as reported in Orr et al. 2018 DOI: 10.1089/ham.2017.0147). Identifying demographic information has been removed from the dataset.