Table 2.

Statistically significant relationships between covariates and circadian rhythm parameters based on multivariate tests in the entire sample; all effects with p < 0.10 included

Parameter	Effect	F	p	Effect	Effect size (Cohen’s d)
Amplitude	Sedating medications	F(2,139) = 3.27	0.041	Higher for those on sedating medications	0.30
	Medical burden	F(2,139) = 3.02	0.052	Decreased as burden increased	0.29
Beta	Age	F(2,139) = 2.95	0.056	Increased as age increased	0.29
Acrophase	Sedating medications	F(2,139) = 6.09	0.003	Later for those on sedating medications	0.42
	Minutes >1000 lux	F(2,139) = 2.86	0.061	Later as light exposure increased	0.29
Alpha	Sex	F(2,139) = 4.98	0.008	Higher for men	0.38
	Age	F(2,139) = 4.59	0.012	Increased as age increased	0.36