An Extended-ABPS also exists
Garratt Andrew M; Ruta Danny A
Bibliographic reference of the ABPS:
Ruta DA, Garratt AM, Wardlaw D, Russell IT. Developing a valid and reliable measure of health outcome for patients with low back pain. Spine. 1994 Sep 1;19(17):1887-96 (Abstract)
Bibliographic reference of the Extended ABPS:
Williams NH, Wilkinson C, Russell IT. Extending the Aberdeen Back Pain Scale to include the whole spine: a set of outcome measures for the neck, upper and lower back. Pain. 19621 Dec;94(3):261-74
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