Differences in HRV
| AF + hypertension group(n = 40) | Hypertension control group(n = 20) | p | |
|---|---|---|---|
| Clinical Demographics | Mean ± SD / Median [IQR] | Mean ± SD / Median [IQR] | |
| Age, years | 66 ± 7 | 65 ± 7 | 0.71 |
| SexMaleFemale | 2911 | 155 | 0.84 |
| BMI (kg/m2) | 32.9 ± 5.2 | 32.1 ± 4.2 | 0.58 |
| HRV Measurements | Mean [95% CI] / Median [95% CI] | Mean [95% CI] / Median [95% CI] | p |
| Heart rate | 66 [61 – 72]a | 60 [56 – 66]a | 0.12 |
| SDNN (ms) | 62 [48 – 80]a | 33 [27 – 41]a | <0.001 |
| rMSSD (ms) | 97 [35 – 105]b | 26 [20 – 37]b | 0.002 |
| pNN50 (%) | 58 [25 – 64]b | 5 [1 – 17]b | <0.001 |
| LF normalised (%) | 42 [33 – 52]a* | 48 [38 – 58]a | 0.39 |
| HF normalised (%) | 58 [48 – 67]a* | 52 [42 – 62]a | 0.39 |
| LF-i/HF-i | 0.7 [0.5 – 1.1]a* | 0.8 [0.6 – 1.2]a | 0.61 |
| SD1 (ms) | 65 [38 – 74]b | 18 [14 – 26]b | <0.001 |
| SD2 (ms) | 90 [72 – 108]a | 47 [36 – 58]a | <0.001 |
| SD1/SD2 | 0.7 [0.6 – 0.7]a | 0.5 [0.4 – 0.5]a | 0.002 |
Normally distributed data are expressed as mean ± standard deviation for descriptive data and mean [95%confidence interval (CI)] otherwise. Identified bysuperscript a. Non-normally distributed data are displayed as median withinterquartile ranges for descriptive data and median [95% CI] otherwise.Identified by superscript b. Normality test was performed using Shapiro-Wilktest. Statistical differences were tested usingindependent t-test (for parametric data) or Mann-Whitney U test (fornon-parametric data). Significance p ≥ 0.05.