Table 5 Concordance according to age, pain intensity and pain duration

Age (grade)

 Sample 1

5.88 (1.4) n = 162

5.73 (1.4) n = 170

0.15

0.32

 Sample 2

6.26 (1.1) n = 219

6.55 (1.1) n = 101

0.29

0.03

Intensity

 Sample 1: MSK^a

6.40 (1.7) n = 58

5.16 (2.2) n = 170

1.24

<0.01

 Sample 2: Spinal^b

3.15 (1.15) n = 20

2.81 (1.15) n = 100

0.34

0.23

Duration (days)

 Sample 1

129 (366) n = 52

62 (193) n = 164

67

0.09