An association between heart rate variability and pediatric obstructive sleep apnea

Table 3 Factors associated with obstructive sleep apnea in children underwent heart rate variability study

Factors	Unadjusted odds ratio (95% confidence interval)	Adjusted odds ratio (95% confidence interval)
SDNN, ms	0.984 (0.967, 1.001)	0.949 (0.913, 0.985)
rMSSD, ms	0.985 (0.942, 1.031)	1.093 (0.952, 1.255)
LF, ms²	1.016 (0.949, 1.087)	1.356 (1.075, 1.709)
HF, ms²	0.979 (0.919, 1.044)	0.786 (0.624, 0.989)

Note: Factors in the model included age, sex, body mass index, adenoid grading, tonsil grading, adenotonsillectomy, and apnea-hypopnea index; SDNN: standard deviation of all normal interval; rMSSD: root-mean square of difference between adjacent normal interval; LF: low frequency; HF: high frequency

ISSN: 1824-7288