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. 2012 Jun 6;21(12):2531–2538. doi: 10.1007/s00586-012-2382-0

Table 1.

Baseline characteristics of all patients included and the 99 patients followed up at 9 years

Lumbar fusion Cognitive intervention and exercises
Baseline (n = 66) Long term (n = 55) Baseline (n = 58) Long term (n = 44)
Mean age (years) 42.7 ± 8.0 43.0 ± 8.1 42.4 ± 8.0 42.6 ± 7.9
Men/women (%) 27/39 (41/59) 19/36 (35/65) 29/29 (50/50) 19/25 (43/57)
Duration of symptoms in years 8.9 ± 7.9 8.7 ± 7.6 9.6 ± 7.4 9.8 ± 6.7
Married/living together 57 (86) 47 (85) 49 (81) 38 (86)
Occupational education <3 years 45 (68) 39 (71) 38 (66) 28 (64)
Work status
 Working 9 (14) 9 (16) 9 (16) 7 (16)
 On sick leave 14 (21) 13 (24) 16 (28) 12 (27)
 On rehabilitation 29 (44) 21(38) 22 (38) 17 (39)
 Disability pension 10 (15) 8 (15) 10 (17) 7 (16)
 Other 4 (6) 4 (7) 1 (2) 1 (2)
ODI 44.5 ± 10.7 44.5 ± 10.8 44.2 ± 11.0 44.4 ± 11.2
Back pain (0–100) (worst possible) 63.0 ± 14.7 62.4 ± 14.4 64.6 ± 12.5 63.2 ± 12.8
Comorbidity 24 (36) 20 (36) 18 (31) 13 (30)
Taking analgesics daily or weekly 40 (61) 33 (60) 40 (69) 31 (70)
Smoking 36 (55) 28 (51) 30 (52) 21 (48)

Values are mean ± SD or number of patients (%)