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Table 4 Difference in the regression slope for each time point for intervention and control, control group as reference (n = 123)

From: The effect of spinal manipulative therapy and home stretching exercises on heart rate variability in patients with persistent or recurrent neck pain: a randomized controlled trial

Group × time Treatment effect (unadjusted)
B P value 95% CI
R-R (ms) 0.1 0.997 − 17.2 17.4
RMSSD (ms) 0.4 0.829 − 3.1 3.9
SDNN (ms) 0.8 0.548 − 1.8 3.4
LF (ms2) 44.2 0.482 − 79.4 167.8
HF (ms2) − 12.5 0.746 − 88.3 63.3
LF/HF 0.2 0.498 − 0.5 0.9
Total Power (ms2) 23.1 0.791 − 148.2 194.4
  1. R-R mean R-R interval, RMSSD root mean square of successive differences, SDNN standard deviation of normal to normal, LF low frequency, HF high frequency, LF/HF LF/HF ratio