Table I.

Characteristics of Patients With True vs White Coat Resistant Hypertension*

Characteristic	True (n=313)	White Coat (n=184)	P
Male sex, %	34	23	.01
Age, y	59	62	.04
Physical inactivity, %	76	67	.05
No. of antihypertensive drugs	3.7	3.6	.85
Office BP, mm Hg	183/102	172/97	<.001
24–Hour BP, mm Hg	151/87	121/71	<.001
Daytime BP, mm Hg	53/89	23/73	<.001
Nighttime BP, mm Hg	142/79	113/65	<.001
24–Hour protein, g/24h	0.39	0.22	<.001
24–Hour albumin, mg/24 h	64	33	<.001
Echocardiographically derived
Septal wall thickness, mm	12.1	11.0	<;.001
Posterior wall thickness, mm	11.7	10.6	<.001
Left ventricular mass index, g/m2	53	133	<.001
*True resistant hypertension: office blood pressure (BP) >140/90 mm Hg and daytime ambulatory BP >135/85 mm Hg; white coat resistant hypertension: office BP >140/90 mm Hg and daytime ambulatory BP <135/85 mm Hg. Adapted from Muxfeldt et al. 8