TABLE 7.

Comparison of average number of deceleration and acceleration series in supine and tilt. Monotonic series of no more than eight consecutive heartbeats has been compared in supine, and no more than 10 heartbeats in tilt.

RR sequence length	Median (mean)
	Supine			Tilt
	dec.	acc.	p-value	dec.	acc.	p-value
1	25 (28.70)	27 (29.00)	0.649	23 (24.76)	23 (25.27)	0.331
2	31 (29.63)	28 (28.03)	0.026	14 (15.97)	15 (16.38)	0.424
3	12 (11.90)	10 (10.10)	0.001	12 (12.37)	9 (9.44)	0.001
4	3 (3.68)	4 (4.74)	0.001	7 (8.07)	6 (5.92)	0.001
5	1 (1.59)	2 (2.50)	0.001	4 (4.21)	4 (4.45)	0.438
6	0 (0.45)	0 (1.08)	0.001	2 (2.44)	3 (3.12)	0.007
7	0 (0.12)	0 (0.40)	0.003	1 (1.31)	2 (2.35)	0.001
8	0 (0.03)	0 (0.29)	0.003	0 (0.69)	1 (1.59)	0.001
9	—	—	—1	0 (0.26)	0 (0.81)	0.001
10	—	—	—1	0 (0.13)	0 (0.47)	0.001

¹Insufficient data.