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Significant heart rate variability indices associated with severe respiratory compromise
| Characteristic | OR | 95% CI | P value |
|---|---|---|---|
| LF | 0.99 | 0.98–1 | 0.005 |
| HF | 0.99 | 0.97–1 | 0.004 |
| First symptom to admission | 0.36 | 0.15–0.83 | 0.01 |
HF = high frequency; LF = low frequency; OR = odds ratio.
P value of likelihood ratio test from mixed-effect multivariate model with pseudo R2 0.83.
