Table 5.

Concordance according to age, pain intensity and pain duration

	Concordant	Discordant	Mean Difference	p-value
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: MSKa	6.40 (1.7) n = 58	5.16 (2.2) n = 170	1.24	<0.01
Sample 2: Spinalb	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

^a0–10 Numerical rating scale

^b0–5 Faces pain scale