Table 3.

Multivariable logistic regression analysis of the prevalence of masked hypertension and white-coat hypertension in each season

Participants with normal office BP (<140/90 mm Hg), N = 1,959
	Masked morning HT			Masked evening HT
	Event/number	Odds ratio (95% CI)	P	Event/number	Odds ratio (95% CI)	P
Spring	213/455	1.90 (1.45–2.50)	<0.001	132/455	2.06 (1.48–2.87)	<0.001
Summer	155/501	Ref.		84/501	Ref.
Autumn	247/562	1.78 (1.38–2.31)	<0.001	140/562	1.56 (1.13–2.16)	0.007
Winter	226/441	2.36 (1.79–3.10)	<0.001	111/441	1.76 (1.26–2.47)	0.001
Participants with elevated office BP (≥140/90 mm Hg), N = 2,308
	White-coat morning HT			White-coat evening HT
	Event/number	Odds ratio (95% CI)	P	Event/number	Odds ratio (95% CI)	P
Spring	174/605	0.68 (0.52–0.88)	<0.001	304/605	0.61 (0.47–0.78)	<0.001
Summer	181/478	Ref.		296/478	Ref
Autumn	177/662	0.62 (0.48–0.80)	<0.001	335/662	0.60 (0.46–0.77)	<0.001
Winter	143/563	0.55 (0.42–0.72)	<0.001	283/563	0.56 (0.43–0.73)	<0.001

Masked morning or evening HT was defined as office BP <140/90 mm Hg and masked morning or evening home BP ≥135/85 mm Hg; white-coat HT was defined as office BP >140/90 mm Hg and morning or evening home BP <135/85 mm Hg. The traditional host factors (age, sex, body mass index, prevalent CVD, current smoking, alcohol consumption, diabetes, dyslipidemia, chronic kidney disease, and use of antihypertensive medications) were adjusted by using multivariate logistic regression analysis. Abbreviations: BP, blood pressure; CI, confidence interval; CVD, cardiovascular disease; HT, hypertension.