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. 2019 Dec 15;9(12):e033780. doi: 10.1136/bmjopen-2019-033780

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© Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Heart rate variability parameters in controls and in women with PCOS at age 46 according to the BMI group. The assessment of autonomic function in seated position. The users of beta blockers were excluded. Values are mean±SD or median with 25% and 75% quartiles, and the significance testing was made by Student’s t-test (ln-transform was made to achieve normality). Statistically significant p values are bolded. HR,heart rate; rMSSD, the root mean square of successive R–R differences; LF_RRi, low-frequency (0.04–0.15 Hz) power; HF_RRi, high-frequency (0.15–0.4 Hz) power; α₁, short-term fractal-like scaling exponent by detrended fluctuation analysis; SBP, systolic blood pressure; BRS, baroreflex sensitivity; PCOS, polycystic ovary syndrome.