Outcome | Time | Intervention group n (total n = 145) | Control group n (total n = 161) | Intervention group Meana (SE) | Control group Meana (SE) | Mean differenceb (95% CI) | P value | Age-adjusted mean differenceb (95% CI) | P value |
---|---|---|---|---|---|---|---|---|---|
PROMIS T-scoreb | Baseline | 139 | 152 | 44.7 (0.6) | 43.8 (0.6) | 0.9 (-0.7 to 2.6) | 0.271 | 0.5 (-1.1 to 2.1) | 0.526 |
Change 3 m | 84 | 95 | 2.5 (0.7) | 1.5 (0.7) | 1.0 (-1.5 to 3.5) | 0.365 | 0.93 (-1.0 to 2.9) | 0.346 | |
Change 12 m | 67 | 91 | 2.2 (0.9) | 2.3 (0.7) | -0.1 (-2.3 to 2.1) | 0.923 | 0.09 (-2.3 to 2.2) | 0.935 | |
Low back pain intensity during last week (NRS, 0–10) b | Baseline | 145 | 161 | 5.1 (0.3) | 4.8 (0.3) | 0.29 (-0.8 to 1.3) | 0.521 | 0.38 (-0.7 to 1.5) | 0.427 |
Change 3 m | 91 | 105 | -0.6 (0.5) | -0.4 (0.5) | -0.3 (-2.1 to 1.5) | 0.732 | -0.3 (-2.1 to 1.5) | 0.695 | |
Change 12 m | 79 | 105 | -1.8 (0.5) | -1.3 (0.5) | -0.47 (-2.1 to 1.2) | 0.517 | -0.5 (-2.2 to 1.1) | 0.462 | |
Leg pain intensity during last week LN [(NRS 0–10) + 0.5]e b | Baseline | 145 | 161 | 0.9 (0.1) | 0.9 (0.1) | 0.1 (-0.4 to 0.5) | 0.805 | 0.1 (-0.4 to 0.6) | 0.708 |
Change 3 m | 91 | 105 | -0.2 (0.2) | 0.01 (0.2) | -0.2 (-0.8 to 0.4) | 0.407 | -0.2 (-0.8 to 0.4) | 0.395 | |
Change 12 m | 79 | 105 | 0.4 (0.2) | -0.2 (0.1) | -0.1 (-0.7 to 0.4) | 0.506 | -0.2 (-0.7 to 0.4) | 0.491 | |
ODI%b | Baseline | 145 | 161 | 23.5 (1.3) | 24.0 (1.2) | -0.5 (-4.0 to 3.1) | 0.795 | 0.2 (-3.4 to 3.7) | 0.925 |
Change 3 m | 91 | 105 | -5.1 (1.8) | -3.4 (1.7) | -1.7 (-7.6 to 4.1) | 0.501 | -1.7 (-7.6 to 4.1) | 0.511 | |
Change 12 m | 79 | 104 | -5.7 (2.4) | -4.1 (2.2) | -1.6 (-10.1 to 6.9) | 0.645 | -1.7 (-10.2 to 6.7) | 0.619 | |
EQ5D-3L indexdb | Baseline | 145 | 161 | 0.659 (0.023) | 0.664 (0.022) | -0.005 (-0.089 to 0.080) | 0.890 | < 0.001 (< 0.001 to 0.084) | 0.807 |
Change 12 m | 79 | 107 | 0.048 (0.029) | 0.053 (0.025) | 0.005 (-0.081 to 0.071) | 0.894 | -0.007 (-0.083 to 0.070) | 0.859 | |
Self-rated health EQ5D-VAS (0–100)b | Baseline | 144 | 159 | 68.2 (2.5) | 67.1 (2.4) | 1.1 (-7.3 to 9.4) | 0.771 | 0.5 (-7.9 to 8.8) | 0.899 |
Change 12 m | 75 | 103 | 5.4 (2.4) | 5.6 (2.1) | -0.1 (-6.5 to 6.2) | 0–970 | 0.03 (-6.4 to 6.4) | 0.992 | |
% (n) | % (n) | OR (95% CI) | OR (95% CI) | ||||||
LBP frequency (daily LBP yes/no)c | Baseline | 147 | 161 | 43.4 (63) | 50.9 (82) | 0.79 (0.57 to 1.09) | 0.143 | 0.80 (0.55 to 1.16); | 0.244 |
3 months | 38.7 (36) | 42.6 (46) | 0.94 (0.61 to 1.44) | 0.768 | 0.94 (0.50 to 1.49) | 0.792 | |||
12 months | 83 | 107 | 28.9 (24) | 32.7 (35) | 0.85 (0.48 to 1.51) | 0.586 | 0.84 (0.48 to 1.49) | 0.560 |