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. 2018 Apr 13;18:420. doi: 10.1186/s12885-018-4322-9

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 4 — Correlations between MPN-SAF TSS and WPAI-SHP scores among currently employed respondents. MPN-SAF TSS were correlated to WPAI-SHP scores for (a) absenteeism (n = 386), (b) presenteeism (n = 394), (c) overall work productivity (n = 385), and (d) activity impairment (n = 397). ET, essential thrombocythemia; MF, myelofibrosis; MPN, myeloproliferative neoplasm; MPN-SAF TSS, Myeloproliferative Neoplasm Symptom Assessment Form Total Symptom Score; PV, polycythemia vera; WPAI-SHP, Work Productivity and Activity Impairment Specific Health Problem questionnaire