Fig.3. Correlation diagram of average P wave duration with creatinine level and Spearman rank correlation coefficient and its 95% confidence interval.
The lower and upper limits of 95% CI are greater than zero, i.e. the correlation is positive and statistically significant (p <0.05). The increase in creatinine concentration is accompanied by an increase in the duration of P wave.
However, no statistically significant relationship was observed between the dose of propafenone and the duration of the P wave. Spearman’s rank correlation cohort rho does not differ significantly from zero (the lower and upper limits of the 95% confidence interval differ in sign, i.e. they contain 0; p> 0.05). This conclusion applies both to the entire studied group of patients and to the AF and CV groups separately.
There were no correlations between the P wave duration and propafenone treatment (dose) among all studied patients as well in AF and CV groups. The results are depicted in Figure 4.