“…The instrument comprises seven domains: pain (questions 1, 2, 3,6,8,11,18), general self-image (questions 5, 14, 15), function from back condition (questions 7, 12, 13), general level of activity (questions 4, 9, 10), post-treatment self-image (questions 19,20,21), posttreatment function (questions 16,17), and satisfaction with the treatment (questions 22,23,24); each of these domains can be evaluated independently and/or by summarizing all questions in a total outcome score.…”