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Table 2 Health-related quality of life in population and patients preoperatively stratified by sex

From: Disability and health-related quality of life in patients undergoing spinal fusion: a comparison with a general population sample

  Population Patients Mean ratio* (95% CI)
SF-36 dimensions Mean (SD) Preoperative mean (SD) 12 months mean (SD) Preoperative p-value patients vs population preoperative 12 months p-value patients vs population 12 months
Female        
Physical functioning 70 (28) 28 (19) 58 (29) 2.6 (2.3 to 3.0) <0.001 1.3 (1.2 to 1.4) <0.001
General health 60 (22) 53 (20) 56 (21) 1.1 (1.1 to 1.2) <0.001 1.1 (1.0 to 1.1) 0.022
Vitality 65 (23) 45 (22) 64 (23) 1.5 (1.3 to 1.6) <0.001 1.0 (1.0 to 1.1) 0.41
Mental health 77 (19) 63 (21) 77 (19) 1.2 (1.2 to 1.3) <0.001 1.0 (1.0 to 1.0) 0.79
Role physical 64 (42) 9 (21) 44 (43) 7.9 (2.7 to 13.0) <0.001 1.5 (1.3 to 1.7) <0.001
Role emotional 71 (39) 46 (43) 67 (41) 1.6 (1.4 to 1.8) <0.001 1.1 (1.0 to 1.2) 0.17
Social functioning 82 (25) 46 (28) 76 (28) 1.8 (1.7 to 2.0) <0.001 1.1 (1.0 to 1.1) 0.004
Bodily pain 67 (27) 24 (15) 56 (25) 2.8 (2.4 to 3.3) <0.001 1.2 (1.1 to 1.3) <0.001
Male        
Physical functioning 84 (22) 39 (20) 62 (26) 2.2 (1.9 to 2.4) <0.001 1.3 (1.2 to 1.5) <0.001
General health 65 (21) 56 (21) 55 (23) 1.2 (1.1 to 1.3) <0.001 1.2 (1.1 to 1.3) <0.001
Vitality 71 (22) 53 (23) 66 (24) 1.4 (1.2 to 1.5) <0.001 1.1 (1.0 to 1.2) 0.072
Mental health 81 (18) 68 (21) 76 (19) 1.2 (1.1 to 1.3) <0.001 1.1 (1.0 to 1.2) 0.074
Role physical 74 (38) 12 (21) 44 (43) 6.3 (2.1 to 10.5) <0.001 1.7 (1.3 to 2.0) <0.001
Role emotional 79 (35) 44 (43) 65 (42) 1.8 (1.5 to 2.2) <0.001 1.2 (1.1 to 1.4) 0.003
Social functioning 87 (20) 62 (27) 75 (36) 1.4 (1.3 to 1.5) <0.001 1.2 (1.1 to 1.3) <0.001
Bodily pain 75 (23) 30 (16) 55 (29) 2.5 (2.1 to 3.0) <0.001 1.4 (1.2 to 1.5) <0.001
  1. *Adjusted age.