Table 2 Tests for differences between the chronic pain group (MYA) and controls (CON) in their subjective ratings, muscle activity and autonomic variables.

4 (10)^a

50 (39)^a

<.001 ^b

7 (10)^a

68 (38)^a

<.001 ^b

3 (10)^a

72 (45)^a

.001 ^b

0 (0)^a

20 (25)^a

<.001 ^b

0 (0)^a

30 (36)^a

<.001 ^b

0 (0)^a

30(49)^a

<.001 ^b

.7 (.5)

1.5 (.8)

<.001

1.5 (.5)

2.2 (.5)

<.001

3.6 (1)

3.7 (.9)

>.3

1.9 (.9)

1.9 (.6)

>.3

2.6 (.5)

2.5 (.4)

>.3

3.4 (.6)

2.9 (.8)

.015

10.4 (17)^a

25.9 (35)^a

.013 ^b

37.6 (42)^a

56.3 (58)^a

.055^b

17.1(41)^a

23.2 (28)^a

>.3^b

8.8 (15)^a

11.8 (27)^a

.103^b

32.5 (22)^a

44.7 (42)^a

>.3^b

10.1 (9)^a

10.8 (31)^a

>.3^b

66.3 (8.3)

72.7 (8.0)

.013

77.9 (8.1)

80.5 (10.9)

>.3

94.6 (16)

93.2 (23)

>.3

5.0 (4.2)

5.9 (5.6)

>.3

10.5 (4.5)

11.4 (2.9)

>.3

14.1 (5)

16.6 (5)

.123

16.3 (2.2)

16.7 (1.8)

>.3

17.5 (1.9)

17.5 (1.5)

>.3

15.6 (2)

15.1 (2)

>.3

88.3 (7.7)

86.8 (9.4)

>.3

93.5 (6.7)

93.3 (10.4)

>.3

108.6 (12)

106.9 (16)

>.3