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Files

Variables

Related Variables

	hf	High frequency power: the normal sinus to normal sinus interbeat (NN) interval spectral power between 0.15 and 0.4 Hz	Clinical Data/Diagnostic Studies/Heart Rate Variability
	lf	Low frequency power: the normal sinus to normal sinus interbeat (NN) interval spectral power between 0.04 and 0.15 Hz	Clinical Data/Diagnostic Studies/Heart Rate Variability

Sleep Heart Health Study

Related Variables