200 patients with LBP looking for physiotherapy treatment in 15 clinics at Maccabi Healthcare Service in Israel will be recruited. (100 after competion individual therapy, 100 after competion of group therapy). As part of the regular routine in these clinics, patients will be asked to fill the LFSQ, a questionnaire which deals with their back functional status, their level of pain and fear avoidance of physical activity before and after treatment. In the present study, patients will be asked to fill the LFSQ again, 6 months after treatment completion. In two weeks from treatment completion, patients will be interviewed on the telephone. The interview will focuse on their sensation of how they have been helped. It will include an open-ended question and 18 closed questions.