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Table 5 LBP intensity and frequency in the first week following a pain-free period of from 1 to 20+ weeks

From: How can latent trajectories of back pain be translated into defined subgroups?

Duration of pain-free period, weeks Mean (SD) pain intensity in the first week after a pain-free period, 0–10 NRS Mean (SD) number of days with LBP in the first week after a pain-free period n
1 3.35 (1.9) 2.37 (1.5) 948
2 3.32 (1.8) 2.26 (1.4) 479
3 3.43 (1.9) 2.31 (1.5) 305
4 3.30 (1.8) 2.05 (1.4) 192
5 3.33 (1.8) 2.22 (1.5) 153
6 3.49 (1.9) 2.34 (1.6) 132
7 3.35 (2.0) 2.11 (1.3) 104
8 3.36 (2.1) 2.27 (1.6) 67
9 3.48 (2.1) 2.28 (1.5) 69
10–15 3.32 (1.9) 2.48 (1.8) 243
15–20 3.71 (2.1) 2.45 (1.6) 100
>20 3.67 (2.0) 3.19 (2.1) 228