Table 1.

Full inclusion and exclusion criteria

Inclusion criteria	Exclusion criteria
Aged 18–80	Pre-existing diagnosis of hypertension or attending hospital with acute end-organ damage related to severe, undiagnosed hypertension.
Admitted to hospital for an acute or elective medical or surgical condition.	Presence of atrial fibrillation or other pulse rate irregularity, which means ABPM is not appropriate.
Have at least three in-hospital blood pressure recordings with two performed during day time hours and 1 performed during night-time hours, over a minimum of 24 hours for the index admission.	Currently pregnant, within 3 months postpartum or planning pregnancy during study period.
Identified by the blood pressure algorithm for any 24 hours interval to have a mean blood pressure which meets the eligibility thresholds.	Receiving treatments which might be used for the management of hypertension, for example, beta blockers for migraine, ACE inhibitors for renal disease.
Registered with a general practitioner.	Diagnosed with terminal illness or cognitive impairment.
	Diagnosed with AKI on index admission or eGFR <30 mL/min.
	Cause for hypertension being toxicology, medical or recreational for example, amphetamines and their derivatives or alcohol withdrawal syndrome.
	Postdischarge destination being another hospital or prison.
	Receiving concomitant chemotherapy.
	Already recruited to a separate hypertension study.

ABPM, ambulatory blood pressure monitoring; AKI, acute kidney injury; eGFR, estimated glomerular infiltration rate.