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Table 1 Characteristics of cohort participants

From: Identifying clinical course patterns in SMS data using cluster analysis

Characteristic  
Number of participants 332
Age (mean) 40 (SD10,
range 18–61)
Gender (proportion women) 58%
Pain intensity (Numerical Rating Scale 0–10, mean)  
Low Back Pain (now) 5.0 (SD2.2)
Low Back Pain (worst last 14 days) 7.7 (SD1.9)
Low Back Pain (average last 14 days) 5.8 (SD1.7)
Leg pain (now) 2.2 (SD2.6)
Leg pain (worst last 14 days) 4.0 (SD3.3)
Leg pain (average last 14 days) 3.1 (SD2.6)
Activity limitation (Low Back Pain Rating Scale 0–100, mean) 50 (SD16.6)
Depression (Beck Depression Inventory, scale 0–63, mean) 10.1 (SD6.8)
Duration of present LBP episode at baseline Range 3–12 months
Occupational physical activity (mainly):  
Sitting 46 (14%)
Mostly walking 77 (23%)
Walking and some lifting 91 (27%)
Heavy work 118 (36%)