. 2021 Sep 23;2021:8882498. doi: 10.1155/2021/8882498

Table 2.

Intergroup comparison of complexity, mean arterial pressure (MAP), and heart rate (HR) in the last 300 s before the termination of HUTT.

Time to HUTT_end (seconds)	Variable	Syncope_[yes] n = 54	Syncope_[no] n = 27
300	Complexity (bits)	625.6 ± 848.2	481.3 ± 462.3
	HR (bpm)	77.6 ± 13.0^∗∗	88.9 ± 16.2^∗∗
	MAP (mm Hg)	103.2 ± 16.5	99.1 ± 16.8

270	Complexity (bits)	726.5 ± 1077.4	501.9 ± 509.5
	HR (bpm)	79.4 ± 12.8	88.8 ± 16.9
	MAP (mm Hg)	102.8 ± 18.2	99.0 ± 17.6

240	Complexity (bits)	795.4 ± 1011.6^∗∗	380.7 ± 355.4^∗∗
	HR (bpm)	79.5 ± 13.4^∗∗	88.8 ± 13.8^∗∗
	MAP (mm Hg)	102.6 ± 17.9	98.0 ± 17.4

210	Complexity (bits)	746.4 ± 1142.9	449.1 ± 386.7
	HR (bpm)	82.0 ± 14.7	86.2 ± 17.0
	MAP (mm Hg)	103.8 ± 19.1	98.9 ± 17.4

180	Complexity (bits)	868.9 ± 1221.8^∗	438.0 ± 475.1^∗
	HR (bpm)	86.4 ± 17.5	86.3 ± 14.7
	MAP (mm Hg)	103.8 ± 19.0	98.9 ± 17.1

150	Complexity (bits)	790.1 ± 860.9^∗	385.0 ± 435.4^∗
	HR (bpm)	85.9 ± 15.3	86.5 ± 13.6
	MAP (mm Hg)	103.2 ± 19.1	97.6 ± 18.2

120	Complexity (bits)	847.7 ± 1006.1#	333.4 ± 1006.1#
	HR (bpm)	88.9 ± 17.5	87.9 ± 14.7
	MAP (mm Hg)	104.1 ± 18.7	98.1 ± 18.4

90	Complexity (bits)	1063.5 ± 1287.7#	360.8 ± 268.7#
	HR (bpm)	90.8 ± 19.5	86.4 ± 15.3
	MAP (mm Hg)	103.1 ± 18.8	97.1 ± 17.5

60	Complexity (bits)	1320.9 ± 1400.9#	344.3 ± 245.2#
	HR (bpm)	91.1 ± 21.6	85.1 ± 14.2
	MAP (mm Hg)	101.2 ± 19.9	97.4 ± 17.3

30	Complexity (bits)	1401.3 ± 1519.4#	596.4 ± 1041.2#
	HR (bpm)	83.3 ± 21.6	85.1 ± 14.2
	MAP (mm Hg)	93.9 ± 20.7	96.4 ± 19.8

Data presented as mean ± standard deviation (SD). HR: heart rate, HUTT: head-up tilt test, MAP: mean blood pressure. Statistically significant intergroup difference (syncope_[yes] vs syncope_[no]) is marked as ^∗p < 0.05; ^∗∗p < 0.01; #p < 0.001.