Guyatt, 1987, J Chron Dis, 40, 171, 10.1016/0021-9681(87)90069-5
Beaton, 2000, Spine, 25, 3192, 10.1097/00007632-200012150-00015
Roland, 1983, Spine, 8, 141, 10.1097/00007632-198303000-00004
Fairbank, 1980, Physiotherapy, 66, 271
Salèn, 1994, J Clin Epidemiol, 47, 1423, 10.1016/0895-4356(94)90086-8
Ware, 1992, Med Care, 30, 473, 10.1097/00005650-199206000-00002
Deyo, 1998, Spine, 23, 2003, 10.1097/00007632-199809150-00018
Norman, 1997, J Clin Epidemiol, 50, 869, 10.1016/S0895-4356(97)00097-8
Bombardier, 2001, J Rheumatol, 28, 431
Fairbank, 2000, Spine, 25, 2940, 10.1097/00007632-200011150-00017
Roland, 2000, Spine, 25, 3115, 10.1097/00007632-200012150-00006
Suarez-Almazor, 2000, Rheumatology, 39, 783, 10.1093/rheumatology/39.7.783
Garratt, 2001, Spine, 26, 71, 10.1097/00007632-200101010-00014
Deyo, 1991, Contr Clin Trials, 12, 142, 10.1016/S0197-2456(05)80019-4
Frymoyer, 1992, Clin Orthop, 279, 101, 10.1097/00003086-199206000-00012
Coste, 1994, Br Med J, 308, 577, 10.1136/bmj.308.6928.577
Von Korff, 1996, Spine, 21, 2833, 10.1097/00007632-199612150-00004
Waddel, 1987, Spine, 12, 632, 10.1097/00007632-198709000-00002
Indahl, 1995, Spine, 20, 473, 10.1097/00007632-199502001-00011
Bergner, 1981, Med Care, 19, 787, 10.1097/00005650-198108000-00001
Grotle, 2003, J Rehabil Med, 35, 241, 10.1080/16501970306094
Loge, 1998, Scand J Soc Med, 26, 250, 10.1177/14034948980260040401
Liang, 1990, Med Care, 28, 632, 10.1097/00005650-199007000-00008
Stratford, 1996, Phys Ther, 76, 1109, 10.1093/ptj/76.10.1109
Beurskens, 1996, Pain, 65, 71, 10.1016/0304-3959(95)00149-2
Stratford, 1998, Phys Ther, 78, 1186, 10.1093/ptj/78.11.1186
Beaton, 2001, J Rheumatol, 28, 400
Wells, 2001, J Rheumatol, 28, 406
Fritz, 2001, Phys Ther, 81, 776, 10.1093/ptj/81.2.776
Hagg, 2002, Spine, 27, 1213, 10.1097/00007632-200206010-00014
Taylor, 1999, Spine, 24, 1805, 10.1097/00007632-199909010-00010
Guyatt, 2002, J Clin Epidemiol, 55, 900, 10.1016/S0895-4356(02)00435-3
Kopec, 1995, Spine, 20, 341, 10.1097/00007632-199502000-00016
Patrick, 1995, Spine, 20, 1899, 10.1097/00007632-199509000-00011
Jette, 1996, Phys Ther, 76, 930, 10.1093/ptj/76.9.930
Davidson, 2002, Phys Ther, 82, 8, 10.1093/ptj/82.1.8
Leclaire, 1997, Spine, 22, 68, 10.1097/00007632-199701010-00011
Stratford, 1994, Phys Ther, 74, 528, 10.1093/ptj/74.6.528
Stratford, 1997, Spine, 22, 2416, 10.1097/00007632-199710150-00018
Bolton, 1998, J Manipulative Phys Ther, 21, 1
Riddle, 1998, Phys Ther, 78, 1197, 10.1093/ptj/78.11.1197
Stratford, 1996, Phys Ther, 76, 359, 10.1093/ptj/76.4.359
Stratford, 1999, J Orthop Sports Phys Ther, 29, 232, 10.2519/jospt.1999.29.4.232
Rantanen, 2001, J Rehabil Med, 33, 31, 10.1080/165019701300006515