| LBP cross-sectional | LBP longitudinal | NP cross-sectional | NP longitudinal |
---|---|---|---|---|
General Characteristics | Â | Â | Â | Â |
 Patients | 805 | 305 | 256 | 91 |
 Age: median (IQR) | 52 (39; 63) | 52 (41; 62) | 50 (38; 59) | 51 (39; 62) |
 No age reported | 55 | 9 | 26 | 2 |
 Gender female: n (%) | 429 (53) | 168 (55) | 144 (56) | 56 (62) |
 No gender | 52 | 9 | 25 | 2 |
 BMI: median (IQR) | 26.6 (23.1; 30.2) | 26.1 (22.8; 29.1) | 24.8 (22.4; 28.3) | 24.7 (22.5; 28.1) |
 No BMI: n (%) | 257 (32) | 94 (31) | 65 (25) | 20 (23) |
 Married or in a relationship: n (%) | 321 (40) | 130 (43) | 99 (39) | 43 (47) |
 No relationship: n (%) | 397 (49) | 150 (49) | 122 (48) | 42 (46) |
 Not reported: n (%) | 87 (11) | 25 (8) | 35 (14) | 6 (7) |
 Low education (no high school diploma): n (%) | 75 (9) | 19 (6) | 10 (4) | 2 (2) |
 High school diploma and higher education: n (%) | 609 (76) | 248 (81) | 196 (74) | 74 (81) |
 No education reported: n (%) | 121 (15) | 38 (12) | 50 (20) | 15 (16) |
Insurance Type | Â | Â | Â | Â |
 Medicare/Medicaid: n (%) | 275 (34) | 104 (34) | 51 (19) | 19 (21) |
 No fault: n (%) | 5 (0.01) | 3 (0.01) | 11 (4) | 5 (5) |
 Workers compensation: n (%) | 45 (6) | 22 (7) | 14 (5) | 7 (8) |
 Other (private, others): n (%) | 425 (53) | 166 (54) | 155 (61) | 58 (64) |
 Not reported: n (%) | 54 (7) | 10 (3) | 25 (10) | 2 (2) |
Occupation | Â | Â | Â | Â |
 White collar worker: n (%) | 212 (26) | 82 (27) | 88 (34) | 29 (32) |
 Blue collar worker: n (%) | 111 (13) | 39 (13) | 27 (11) | 11 (12) |
 Not reported: n (%) | 109 (13) | 32 (11) | 40 (16) | 9 (10) |
Work Status | Â | Â | Â | Â |
 Retired: n (%) | 109 (14) | 48 (16) | 24 (9) | 11 (12) |
 Not working: n (%) | 331 (41) | 129 (42) | 71 (28) | 29 (32) |
 Not working because of ill health or pain: n (%) | 128 (16) | 52 (17) | 24 (9) | 9 (10) |
 Workers compensation case to the main complaint: n (%) | 26 (3) | 14 (5) | 8 (3) | 6 (7) |
 Working full time/part time | 367 (46) | 146 (48) | 144 (56) | 55 (60) |
 Limited duty | 21 (3) | 7 (2) | 6 (2) | 2 (2) |
Self-reported measures | Â | Â | Â | Â |
 Baseline ODI/NDI: median, IQR | 30 (18; 46) | 28.9 (18; 44) | 16 (9; 24) | 14.4 (9.5; 21.6) |
 End of treatment ODI/NDI: median, IQR | – | 22 (10; 35.6) | – | 11 (4.4; 16.1) |
 No end of treatment ODI/NDI | – | 18 | – | 3 |
 Baseline NRS: median, IQR | 6 (4; 8) | 6 (4; 8) | 6 (3; 8) | 6 (3; 8) |
 No baseline NRS | 86 | 24 | 30 | 6 |
 End of treatment NRS: median, IQR | – | 4 (3; 6) | – | 4 (2; 5) |
 No end of treatment NRS | – | 239 | – | 68 |
 Baseline FABQ-W: median, IQR | 9 (0; 21) | 8 (0; 19) | 12 (3; 21) | 11 (0; 21) |
 No baseline FABQ-W | 153 | 53 | 46 | 10 |
 End of treatment FABQ-W: median, IQR | – | 6 (0; 17) | – | 9 (0; 16.3) |
 No end of treatment FABQ-W | – | 82 | – | 27 |
 Baseline FABQ-P: median, IQR | 15 (11; 19) | 15 (11; 18) | 14 (10; 19) | 14.5 (9; 19) |
 No baseline FABQ-P | 64 | 20 | 30 | 3 |
 End of treatment FABQ-P: median, IQR | – | 12 (6; 17) | – | 11 (7; 15.8) |
 No end of treatment FABQ-P | – | 63 | – | 21 |