Table 4.

Comparisons between high and low variability of 24 h–SBP groups in participants with OSA

Variables	Low variability (n = 81)	High variability (n = 81)
Age (years)	50 ± 14	55 ± 16*
Male, n (%)	52 (64.2)	54 (66.4)
BMI (kg/m2)	27.3 ± 5.7	28.2 ± 6.9
Current smoking, n (%)	38 (46.9)	40 (49.4)
Clinic-SBP (mm Hg)	142 ± 17	143 ± 18
Clinic-DBP (mm Hg)	85 ± 10	86 ± 10
Clinic-HR (bpm)	78 ± 9	79 ± 13
FPG (mmol/L)	5.5 ± 0.5	5.6 ± 0.4
TC (mmol/L)	5.1 ± 0.5	5.2 ± 0.4
TG (mmol/L)	1.8 ± 0.7	1.9 ± 0.8
HDL-C (mmol/L)	1.1 ± 0.5	1.1 ± 0.4
LDL-C (mmol/L)	3.4 ± 0.5	3.3 ± 0.6
Cr (umol/L)	70.6 ± 13.5	72.2 ± 13.9
Hs-CRP (mg/dL)	8.8 ± 3.0	10.2 ± 4.6
24 h–SBP (mm Hg)	132 ± 13	137 ± 15*
24 h–DBP (mm Hg)	78 ± 10	79 ± 12
24-HR (beat per minute)	72 ± 12	74 ± 13
Weighted 24 h–SD of SBP (mm Hg)	12.6 ± 3.7	16.0 ± 4.9*
Weighted 24 h–SD of DBP (mm Hg)	7.4 ± 1.5	8.0 ± 2.2
Daytime-SBP (mm Hg)	137 ± 11	143 ± 18*
Daytime-DBP (mm Hg)	81 ± 11	85 ± 14
Daytime-HR (beat per minute)	77 ± 12	80 ± 15
Weighted daytime-SD of SBP (mm Hg)	14.7 ± 4.0	17.9 ± 5.2*
Weighted daytime-SD of DBP (mm Hg)	8.1 ± 1.6	8.5 ± 2.3
Nighttime-SBP (mm Hg)	128 ± 11	133 ± 14*
Nighttime-DBP (mm Hg)	73 ± 6	77 ± 8
Nighttime-HR (beat per minute)	64 ± 7	68 ± 9
Weighted nighttime-SD of SBP (mm Hg)	10.8 ± 1.5	13.9 ± 2.1*
Weighted nighttime-SD of DBP (mm Hg)	6.5 ± 1.0	7.2 ± 1.3
AHI (events/h)	9.9 ± 4.5	13.8 ± 7.6*
CVD, n (%)	31 (38.3)	35 (43.2)*
Anti-platelet agent, n (%)	34 (42.0)	34 (42.0)
Statins, n (%)	29 (35.8)	30 (37.0)
ACEI/ARB, n (%)	58 (71.6)	61 (75.3)*
CCB, n (%)	17 (21.0)	16 (19.8)
Diuretic, n (%)	26 (32.1)	26 (32.1)
Beta-blocker, n (%)	18 (22.2)	37 (23.5)
Alpha-blocker, n (%)	5 (6.2)	5 (6.2)
Anti-HTN medications number	2.3 ± 0.7	2.6 ± 0.9

Abbreviation is the same as the Table 1; * P < 0.05 vs low variability group