Table 3.

Cross-classification of any ambulatory hypertension on two 24-hour ambulatory blood pressure monitoring (ABPM) recording periods

		Second 24-hour ABPM (ABPM2)		Reproducibility
		Ambulatory hypertension	No ambulatory hypertension	Kappa	95% CI
First 24-hour ABPM (ABPM1)	Ambulatory hypertension	79	18	0.72	0.63–0.81
	No ambulatory hypertension	18	167

The data are expressed as the number of participants, and kappa statistic with 95% CI. Bolded numbers represent the number of participants with concordant results across the 2 ABPM recordings. Any ambulatory hypertension is defined as daytime hypertension (mean awake systolic/diastolic BP ≥135/85mm Hg) and/or nocturnal hypertension (mean sleep systolic/diastolic BP ≥120/70mm Hg).