“Lunar Circadian Rhythms”, Gwern2013-07-26 (R, QS, psychology, scientific bias, power analysis, sleep)⁠:

Is sleep affected by the phase of the moon? An analysis of several years of 4 Zeo users’ sleep data shows no lunar cycle.

I attempt to replicate, using public Zeo-recorded sleep datasets, a finding of a monthly circadian rhythm affecting sleep in a small sleep lab. I find only small non-statistically-significant correlations, despite being well-powered.

• Background
• Analysis
  • Preparation
  • Descriptive
  • Regressions
    • Multivariate Linear Model
    • Multi-Level Model
  • Power Analysis