Table 3. ANOVA and contrast analysis of the raw and position data of variables with significant time-effects in 2-pre AF hours.

		Time	[120 60] vs. [60 0]	[60 30] vs. [30 0]	[30 15] vs. [15 0]	[10 5] vs. [5 0]
raw	RPAA	0.035	0.019↑
	ArrhyDuration	0.03	0.016↑			0.01↑
	AAMean*	0.005	0.012↓	0.025↓	0.051↓
	LFPortion*	0.005	0.004↑		0.035↑	0.032↑
	HFPortion*	0.005			0.002↓	0.001↓
	LF/HF*	0.028			0.003↑	0.001↑
	HF/LF*	0.028			0.003↓	0.001↓
Position	RPAA*	0.001	0.030↑			0.002↑
	ArrhyDuration*	0.001	0.034↑			0.002↑
	AAMean*	0.005	0.023↓	0.052↓	0.017↓
	LFPortion*	0.043	0.049↑		0.026↑	0.005↑
	HFPortion*	0.018			0.008↓	<0.001↓
	LF/HF*	0.037			0.016↑	0.005↑
	HF/LF*	0.045		0.049↓	0.036↓	0.001↓

The upward and downward arrows stand respectively for the increasing and decreasing trend from one period to the next. “Time” column is the time effect significance in the two hours ANOVA analysis. The contrast analysis over the two time periods is listed subsequently. “0” is corresponding to the onset of AF.

Variables with asterisk were log transformed.