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Table 2 Demographics of the study population at baseline, n = 131

From: The effect of spinal manipulative therapy and home stretching exercises on heart rate variability in patients with persistent or recurrent neck pain: a randomized controlled trial

  Intervention (66) Control (65)
Age, mean (sd) 57 (14.0) 58 (13.7)
Female, n (%) 37 (56) 36 (55)
Baseline neck pain NRS-11, mean 4.68 4.17
Arm pain, n (%) 42 (65) 36 (57)
Pain in the midback, n (%) 39 (61) 37 (62)
Pain in the low back, n (%) 39 (62) 37 (59)
Neck pain
1. Less than 6 months, n (%) 0 (0) 1 (2)
2. 6–12 months, n (%) 8 (12) 10 (16)
3. Several years, n (%) 57 (88) 51 (82)
STarT back categories
1. Low risk, n (%) 47 (80) 48 (79)
2. Medium risk, n (%) 7 (12) 11 (18)
3. High risk, n (%) 5 (9) 2 (3)
Sick leave during previous year
Does not work, n (%) 13 (20) 18 (28)
No, n (%) 47 (71) 41 (63)
Yes, between 1 and 7 days, n (%) 3 (5) 2 (3)
Yes, between 8 and 14 days, n (%) 3 (5) 0 (0)
Yes, more than 15 days, n (%) 0 (0) 4 (6)