Table 3 PSG sleep quality and arousal mean values (SD) and pain thresholds for controls and phase-related migraine subgroups

Total sleep time (min)

409 (68)

435 (61)

440 (62)

445 (53)

Sleep efficiency (%)

90 (08)

91 (6)

91 (6)

94 (3)

Latency to sleep onset (min)

12.8 (14.6)

10.3 (17.8)

2.0 (3.7)

6.5 (7.9)

INT>PRE**

Awakening index (no/h)

1.0 (0.6)

1.3 (0.7)

1.2 (0.7)

0.8 (0.6)

INT>C*

Wake after sleep onset (min)

31 (27)

32 (18)

41 (23)

22 (14)

Stage 1 (min)

27 (19)

32 (15)

41 (16)

33 (27)

Stage 2 (min)

197 (47)

201 (44)

198 (46)

195 (77)

Stage 3 (min)

86 (31)

97 (28)

99 (35)

108 (41)

INT>C(*)

REM (min)

99 (26)

106 (35)

102 (36)

108 (28)

Apnea-hypopnea index (per hour)

2.7 (3.3)

2.4 (3.0)

4.3 (4.9)

0.9 (0.8)

Fast arousal index (per sleep hour)

18.3 (5.7)

16.3 (9.1)

13.4 (5.9)

12.3 (5.5)

C>INT(*)

D-burst index (per sleep hour)

11.8 (8.0)

9.5 (7.5)

10.1 (8.4)

13.9 (9.1)

K-burst index (per sleep hour)

3.0 (3.8)

3.3 (2.5)

1.9 (1.2)

3.4 (3.2)

Slow arousal index (per sleep hour) ³

14.8 (10.9)

12.9 (9.1)

12.0 (8.6)

17.3 (11.9)

PPTavg¹ (kPa)

661 (249)

549 (135)

582 (194)

539 (70)

HPTavg² (°C)

13.4 (3.1)

11.7 (3.6)

13.1 (2.3)

13.6 (2.6)

INT<C*

CPTavg² (°C)

20.8 (6.3)

17.2 (6.9)

19.5 (5.8)

18.4 (6.3)

INT<C*