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and 0.15 Hz) - HF (high frequency power: the
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power) - HFn (normalized HF, ratio HF/(HF+LF)) - LFn
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VLF power, LF power, HF power and LF/HF ratio
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1=Yes if Y to any of the following: heartattack_ynd, congestive_hf_ynd, coronary_ynd, atheroscl_ynd, pacemaker_ynd, angioplasty_ynd, coronary_bypass_ynd, coronary_artery_stent, other_heart_surgery (including cardiac conversion, heart catheter, cardiac ablation, abdominal aortic repair, open heart surgery, defibrillation)
sympth1
under
Medical History/Medications/SHHS1
in
SHHS variables
Participant taking SYMPATHOMIMETICS, ORAL AND INHALED within two weeks of the Sleep Heart Health Study Visit One (SHHS1) visit. All medications were recorded during the interview, and medication information was later categorized by physician review.
sympth2
under
Medical History/Medications/SHHS2
in
SHHS variables
Participant taking SYMPATHOMIMETICS, ORAL AND INHALED within two weeks of the Sleep Heart Health Study Visit Two (SHHS2) visit. All medications were recorded during the interview, and medication information was later categorized by physician review.