Table 2.

Univariate associations of covariates with PCs

Predictor variable	PC	B(SE)	T	p
Age	1	−0.20 (0.12)	−1.7	0.091
	2	0.026 (0.077)	0.33	0.74
	3	−0.15 (0.073)	−2.11	0.036
Sex	1	−2.73 (4.05)	−0.67	0.50
	2	0.52 (2.62)	0.20	0.84
	3	−0.010 (2.51)	−0.04	0.97
Blood pressure medication	1	−15.7 (6.5)	2.40	0.017
	2	2.46 (4.2)	0.58	0.56
	3	−8.87 (4.10)	−2.19	0.029
SBP	1	−0.18 (0.10)	−1.91	0.057
	2	0.033 (0.063)	0.52	0.60
	3	−0.12 (0.060)	−1.95	0.052
DBP	1	−0.33 (0.19)	−1.72	0.087
	2	−0.052 (0.13)	−0.42	0.68
	3	−0.30 (0.12)	−2.54	0.011
Hypertension	1	−12.2 (5.08)	−2.41	0.016
	2	1.93 (3.30)	0.59	0.56
	3	−5.87 (3.14)	−1.87	0.062