Table 3 Pain characteristic and pain rating index compared by location and number of pain locations

Head

68/49

2.34 (0.33, 4.35)

2.67 (0.76, 4.58)

3.10 (1.21, 4.99)

P < 0.05

P < 0.01

P < 0.01

Neck and shoulder

86/31

3.28 (1.06, 5.50)

2.87 (0.77, 4.96)

2.63 (0.56, 4.69)

P < 0.01

P < 0.01

P < 0.01

Chest and abdomen

60/57

0.81 (−1.21, 2.84)

0.03 (−2.03, 2.09)

−0.49 (−2.45, 1.46)

P = 0.43

P = 0.98

P = 0.62

Back

65/52

2.63 (0.65, 4.61)

1.75 (−0.18, 3.68)

2.54 (0.63, 4.45)

P < 0.01

P = 0.08

P < 0.01

Upper limbs

99/18

0.77 (−2.03, 3.58)

1.31 (−1.46, 4.08)

0.74 (−1.91, 3.38)

P = 0.59

P = 0.35

P = 0.58

Lower limbs

85/32

0.08 (−2.19, 2.36)

0.07 (−2.07, 2.22)

0.71 (−1.32, 2.74)

P = 0.94

P = 0.95

P = 0.49

Number of pain locations

(increase of 1)

0.85 (0.39, 1.32)

0.85 (0.40, 1.30)

P < 0.001

P < 0.001

Score of affective component

N (no/yes)

Unadjusted OR (95% CI)

Multiply adjusted for confounders*

Reciprocally adjusted**

Head

72/49

0.12 (−1.46, 1.70)

0.24 (−1.19, 1.66)

0.46 (−0.97, 1.89)

P = 0.88

P = 0.75

P = 0.52

Neck and shoulder

88/33

1.60 (−0.12, 3.32)

1.29 (−0.25, 2.83)

1.46 (−0.11, 3.02)

P = 0.07

P = 0.10

P = 0.07

Chest and abdomen

60/61

2.21 (0.71, 3.71)

1.74 (0.29, 3.20)

1.67 (0.20, 3.15)

P < 0.01

P < 0.05

P < 0.05

Back

68/53

1.59 (0.05, 3.12)

0.72 (−0.69, 2.13)

0.54 (−0.90, 1.98)

P < 0.05

P = 0.31

P = 0.46

Upper limbs

102/19

−0.98 (−3.11, 1.15)

−0.71 (−2.68, 1.27)

−1.25 (−3.24, 0.75)

P = 0.36

P = 0.48

P = 0.22

Lower limbs

89/32

0.72 (−1.03, 2.48)

0.59 (−0.97, 2.15)

0.66 (−0.89, 2.21)

P = 0.42

P = 0.46

P = 0.40

Number of pain locations

(increase of 1)

0.07 (−0.31, 0.44)

0.03 (−0.32, 0.37)

P = 0.73

P = 0.88

Pain rating index

N (no/yes)

Unadjusted OR (95% CI)

Multiply adjusted for confounders*

Reciprocally adjusted**

Head

68/49

2.41 (−0.77, 5.60)

2.99 (0.13, 5.84)

3.63 (0.80, 6.46)

P = 0.14

P < 0.05

P < 0.01

Neck and shoulder

86/31

4.94 (1.46, 8.41)

4.19 (1.10, 7.27)

4.09 (1.00, 7.18)

P < 0.01

P < 0.01

P < 0.01

Chest and abdomen

60/57

3.15 (0.03, 6.27)

1.74 (−1.27, 4.75)

1.10 (−1.83, 4.02)

P < 0.05

P = 0.26

P = 0.46

Back

65/52

4.30 (1.21, 7.40)

2.56 (−0.29, 5.40)

3.16 (0.30, 6.02)

P < 0.01

P = 0.08

P < 0.05

Upper limbs

99/18

−0.38 (−4.78, 4.01)

0.46 (−3.63, 4.55)

−0.57 (−4.53, 3.39)

P = 0.86

P = 0.83

P = 0.78

Lower limbs

85/32

0.78 (−2.87, 4.33)

0.72 (−2.43, 3.87)

1.42 (−1.62, 4.46)

P = 0.67

P = 0.65

P = 0.36

Number of pain locations

(increase of 1)

0.92 (0.18, 1.67)

0.87 (0.19, 1.56)

P < 0.05

P < 0.01