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The aim of the study was to validate a specific self\u2010questionnaire for symptom assessment and their influence on quality of life and functionality of chronic low back pain patients (Questionnaire for Symptom Assessment in Pain disorders for back pain patients, Q\u2010SAP).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The self\u2010questionnaire consists of two parts (for back and if applicable leg symptoms) and was tested in 152 chronic low back pain patients with and without radiculopathy. Test\u2013retest reliability, exploratory factor analysis, convergent validity, criterion\u2010related validity and the sensitivity to detect patient reported changes were investigated.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The questionnaire showed a good to excellent test\u2013retest reliability. In the factor analysis nociceptive and neuropathic pain components could be separated and the highest convergent validities were shown for the painDETECT, EQ\u20105D\u20103L and the FFbH\u2010R. The criterion\u2010related validity showed concordance of QST and the Q\u2010SAP Back for warmth induced pain and numbness. Regarding the sensitivity to patient\u2010reported changes, a moderate correlation was found for both parts of the questionnaire.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The Q\u2010SAP was tested as a useful, valid and reliable tool. This new questionnaire records classical nociceptive and neuropathic pain symptoms of chronic low back pain patients depending on their local distribution. Furthermore, the questionnaire records the intensity of these symptoms and their influence on quality of life and functionality and can be used for the evaluation of treatment.<\/jats:p><\/jats:sec><jats:sec><jats:title>Significance<\/jats:title><jats:p>The Q\u2010SAP Back\/Leg is a new self\u2010questionnaire for CLBP patients with or without radiating leg pain that precisely assesses neuropathic and nociceptive symptoms. In contrast to other questionnaires, the Q\u2010SAP Back\/Leg evaluates not only symptom intensities but also their impact on the patient's quality of life and functionality. Furthermore, this questionnaire requests the symptoms depending on their anatomical distribution.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ejp.1690","type":"journal-article","created":{"date-parts":[[2020,11,1]],"date-time":"2020-11-01T03:28:13Z","timestamp":1604201293000},"page":"513-528","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Validation of the Questionnaire for Symptom Assessment in Pain disorders for Back pain patients (Q\u2010SAP)"],"prefix":"10.1002","volume":"25","author":[{"given":"Jan Carl","family":"Otto","sequence":"first","affiliation":[{"name":"Division of Neurological Pain Research and Therapy Department of Neurology University Hospital Schleswig\u2010Holstein Kiel Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Janne","family":"Gierthm\u00fchlen","sequence":"additional","affiliation":[{"name":"Division of Neurological Pain Research and Therapy Department of Neurology University Hospital Schleswig\u2010Holstein Kiel Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Viktoria","family":"Kirchhofer","sequence":"additional","affiliation":[{"name":"Division of Neurological Pain Research and Therapy Department of Neurology University Hospital Schleswig\u2010Holstein Kiel Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christoph","family":"Borzikowsky","sequence":"additional","affiliation":[{"name":"IMIS Institute for Medical Informatics and Statistics Kiel University University Hospital Schleswig\u2010Holstein Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ralf","family":"Baron","sequence":"additional","affiliation":[{"name":"Division of Neurological Pain Research and Therapy Department of Neurology University Hospital Schleswig\u2010Holstein Kiel Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,11,22]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.pain.2008.01.006"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(11)60610-7"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/ejp.838"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1001\/archpsyc.1961.01710120031004"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0b013e3181cd656f"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.pain.2011.02.033"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0304-3959(00)00482-6"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.pain.2009.08.020"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.pain.2004.12.010"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.pain.2003.12.024"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.spinee.2007.10.008"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpain.2018.07.009"},{"key":"e_1_2_8_14_1","volume-title":"Statistical power analysis for the behavioral sciences","author":"Cohen J.","year":"1988"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1097\/j.pain.0000000000000379"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM200102013440508"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1002\/ejp.1407"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1185\/030079906X132488"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1080\/03007995.2017.1360851"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1097\/j.pain.0000000000001601"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.3390\/ijms20122906"},{"key":"e_1_2_8_22_1","volume-title":"ECDEU assessment manual for psychopharmacology","author":"Guy W.","year":"1976"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1526-4637.2008.00425.x"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1002\/14651858.CD000335.pub2"},{"key":"e_1_2_8_25_1","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0b013e31820712bb"},{"key":"e_1_2_8_26_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00586-014-3723-y"},{"key":"e_1_2_8_27_1","unstructured":"IASP Terminology\u2014IASP. 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