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Randomization to Randomization Probability: Estimating Treatment Effects Under Actual Conditions of Use

Version
1
Resource Type
Dataset : experimental data, other, survey data
Creator
  • Allison, David B. (University of Alabama at Birmingham)
Publication Date
2017-01-02
Funding Reference
  • United States Department of Health and Human Services. National Institutes of Health. National Institute of Diabetes and Digestive and Kidney Diseases
    • Award Number: P30DK056336
  • United States Department of Health and Human Services. National Institutes of Health. National Institute of Diabetes and Digestive and Kidney Diseases
    • Award Number: T32DK062710
  • United States Department of Health and Human Services. National Institutes of Health. National Institute of Diabetes and Digestive and Kidney Diseases
    • Award Number: R25DK099080
  • United States Department of Health and Human Services. National Institutes of Health. National Heart Lung and Blood Institute
    • Award Number: R25HL124208
Free Keywords
caffeine; randomization method; vigilance; mood; randomized controlled trial; probability; expectations
Description
  • Abstract

    This folder contains the data, code, and data dictionary required to reproduce the caffeine pilot study results published in our Psychological Methods manuscript: Randomization to Randomization Probability: Estimating Treatment Effects Under Actual Conditions of Use.
  • Weighting

    N/A
  • Technical Information

    Response Rates: Three hundred forty-one subjects were screened over the phone for eligibility. Of those, 205 attended the single study visit and completed the study. After participation, 5 subjects were deemed ineligible by study staff and were not included in the outcome analysis. The analytic sample size was 200 subjects.
  • Technical Information

    Presence of Common Scales: The POMS-2 questionnaire employs a Likert-type scale for response options. See the attached Data Dictionary for the exact response options.
Temporal Coverage
  • Time Period:
  • Collection Date(s):
Geographic Coverage
  • Alabama
Sampled Universe
The inclusion criteria of the study were: age=18; willingness to take 2 caffeine or placebo pills; willingness to abstain from caffeine for 12 hours prior to study visit (8:30pm-8:30am); UAB employees or students with some college education (including current enrollment). The exclusion criteria were: uncorrected vision problems; nicotine use; use of medications for sleep, anxiety, and/or ADHD; pregnant or trying to get pregnant; lactose intolerance. Smallest Geographic Unit: N/A
Sampling
Convenience sampling
Collection Mode
  • cognitive assessment test~~on-site questionnaire~~other~~

    See the Methods section of our publication for complete details on data collection. 

Availability
Download
Relations
  • Cites
    DOI: 10.1037/met0000138 (Text)
Publications
  • George, Brandon J., Peng Li, Harris R. Lieberman, Greg Pavela, Andrew W. Brown, Kevin R. Fontaine, Madeline M. Jeansonne, et al. â¿¿Randomization to Randomization Probability: Estimating Treatment Effects Under Actual Conditions of Use.⿝ Psychological Methods, 2017.
    • ID: 10.1037/met0000138 (DOI)

Update Metadata: 2019-06-12 | Issue Number: 1 | Registration Date: 2019-06-12

Allison, David B. (2017): Randomization to Randomization Probability: Estimating Treatment Effects Under Actual Conditions of Use. Version: 1. ICPSR - Interuniversity Consortium for Political and Social Research. Dataset. https://doi.org/10.3886/E100640V1-11981