TABLE 2.

Total cohort blood pressure measurements stratified by obstructive sleep apnoea (OSA) severity quartiles

Variable	Total cohort	Quartile 1	Quartile 2	Quartile 3	Quartile 4	p-value
ABPM day systolic	121±9	120±9	121±9	120±9	122±7	0.851
ABPM day diastolic	74±9	73±8	74±7	71±13	77±7	0.355
ABPM night systolic	112±10	107±10	108±9	113±9	119±7#,¶	0.001
ABPM night diastolic	66±8	61±9	65±8	69±9	68±6	0.039
ABPM % dip	7.3±7.7	11.0±6.0	9.3±7.2	5.4±9.2	3.2±5.9#	0.012
% non-dippers	66	56	59	63	88	0.216
% below daytime value of 135/85 mmHg	92	94	100	88	88	0.464
% below night-time value of 120/70 mmHg	69	75	77	69	56	0.621

Values represent mean±sd or per cent of total. ABPM: Ambulatory blood pressure monitor. ^#p<0.05 versus AHI quartile 1; ^¶p<0.05 versus AHI quartile 2.