Table 1

Differences in the ECG documentation of paroxysmal atrial fibrillation (sotalol − atenolol)

		Treatment–period interaction ^1-150			Period effect ^1-151			Treatment effect ^1-152
		Median	95% CI	p Value		Median	95% CI	p Value		Median	95% CI	p Value
Frequency	−0.5	−1 to 0	0.22		1	0 to 2	0.1		0	0 to 1	0.47
Average duration	0	−0.5 to 0	0.35		0	0 to 1	0.5		0	0 to 1	0.31
Total duration	−0.5	−1 to 0.5	0.29		0	0 to 3	0.33		0	−1 to 2	0.51
TEC	−181	−565 to 56	0.18		52	−142 to 334	0.55		−123	−362 to 135	0.14

↵1-150 For the treatment–period interaction, negative numbers represent an improvement on sotalol followed by atenolol, and positive numbers represent an improvement on atenolol followed by sotalol.
↵1-151 For the period effect, negative numbers represent an improvement towards the beginning of the trial and positive numbers an improvement towards the end of the trial.
↵1-152 For the effect of treatment, negative numbers represent an improvement on sotalol, and positive numbers an improvement on atenolol.
CI, confidence interval; TEC, total ectopic count.