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. 2018 Jun 27;46(9):3640–3655. doi: 10.1177/0300060518777044

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© The Author(s) 2018

Creative Commons Non Commercial CC BY-NC: This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 3. — Frequency of nonspecific symptoms (tiredness/fatigue, sleep disorders, depression, and lack of mental concentration). The severity of each symptom was documented on a 4-point Likert scale (0 = absent, 1 = mild, 2 = moderate, 3 = severe) by the treating physician or natural health practitioner at start and end of treatment. Valid data for tiredness/fatigue, n = 62; for sleep disorders, n = 53; for depression, n = 44; and for lack of mental concentration, n = 60.