Table 2.
Comparison of linear and nonlinear heart rate variability (HRV) indexes between the Breast Cancer Survivors (BCS) and Control groups.
| BCS n = 27 |
Control n = 31 |
Significance p | |
|---|---|---|---|
| RRave (ms) | 729 (648–802) | 795 (713–852) | 0.01 |
| cSDNN | 32.2 (20.8–43.7) | 32.1 (24.6–44.2) | 0.25 |
| cRMSSD | 19.6 (11.8–33.4) | 23.7 (18.3–36.1) | 0.07 |
| pNN50 (%) | 0.5 (0.0–5.6) | 1.5 (0.0–7.7) | 0.12 |
| HFnu | 19.9 (12.9–28.9) | 19.9 (18.2–29.8) | 0.07 |
| cHF | 0.14 (0.04–0.43) | 0.16 (0.11–0.35) | 0.18 |
| cSD1 | 13.8 (8.3–23.6) | 16.7 (13.0–25.5) | 0.07 |
| cSD2 | 42.6 (28.3–59.3) | 41.5 (31.7–55.2) | 0.31 |
| cSD2/SD1 | 3.4 (2.7–5.0) | 2.9 (2.3–3.5) | 0.001 |
| SampEn | 1.5 (1.3–1.8) | 1.7 (1.5–1.8) | 0.04 |
| α1 | 1.3 (1.2–1.5) | 1.2 (1.1–1.4) | 0.05 |
| α2 | 0.6 (0.3–0.6) | 0.5 (0.4–0.5) | 0.04 |
| 0V (%) | 52.2 (39.9–66.8) | 46.42 (38.4–53.6) | 0.05 |
| 1V (%) | 38.1 (28.61–41.5) | 39.4 (36.7–43.7) | 0.05 |
| 2LV (%) | 1.8 (0.0–6.9) | 1.7 (0.9–3.3) | 0.37 |
| 2UV (%) | 7.1 (4.3–11.5) | 10.8 (6.4–15.7) | 0.03 |
Data are presented as median (25th, 75th percentiles). Mann–Whitney's U tests between BCS and Control groups. Bold values correspond to significant results (p value < 0.05).