Table 1.
Reference values of RMSSD and cRMSSD per age bin for women and men separately.
| Age bins (years) | Sex | N | Mean IBI (ms) |
RMSSD (ms) |
cRMSSD (%) |
||||
|---|---|---|---|---|---|---|---|---|---|
| Mean (SD) | Mean (SD) | Median (2nd, 98th percentile) | P valuea | Mean (SD) | Median (2nd, 98th percentile) | P valuea | |||
| 13–14 | Women | 275 | 862.2 (134.6) | 77.7 (51.3) | 66.5 (17.4; 232.2) | 0.865 | 8.8 (5.3) | 7.6 (2.4; 26.6) | 0.865 |
| Men | 278 | 896.9 (128.2) | 80.3 (53.6) | 67.4 (12.8; 213.0) | 8.7 (5.3) | 7.5 (1.7; 22.0) | |||
| 15–19 | Women | 1787 | 890.7 (146.8) | 73.8 (50.5) | 60.7 (12.4; 225.9) | 0.526 | 8.0 (4.9) | 6.9 (1.7; 22.8) | 0.001 |
| Men | 1089 | 948.4 (163.9) | 70.8 (48.8) | 59.9 (9.8; 213.2) | 7.3 (4.7) | 6.3 (1.3; 20.9) | |||
| 20–24 | Women | 3478 | 886.7 (144.7) | 64.7 (47.3) | 52.1 (11.3; 205.5) | ≤0.001 | 7.0 (4.5) | 5.9 (1.6; 20.6) | ≤0.001 |
| Men | 1653 | 941.7 (159.6) | 57.3 (40.1) | 47.6 (9.6; 174.0) | 5.9 (3.7) | 5.0 (1.4; 17.1) | |||
| 25–29 | Women | 5262 | 902.8 (144.9) | 58.0 (40.0) | 47.5 (11.5; 180.7) | ≤0.001 | 6.2 (3.7) | 5.3 (1.6; 17.4) | ≤0.001 |
| Men | 3454 | 951.9 (162.7) | 52.1 (38.8) | 42.3 (10.1; 172.7) | 5.3 (3.5) | 4.4 (1.3; 16.5) | |||
| 30–34 | Women | 5307 | 917.2 (138.9) | 51.6 (35.4) | 42.3 (11.5; 161.0) | ≤0.001 | 5.4 (3.3) | 4.7 (1.5; 15.4) | ≤0.001 |
| Men | 4058 | 959.9 (158.7) | 45.4 (32.4) | 36.9 (10.2; 140.8) | 4.6 (2.9) | 3.9 (1.3; 13.2) | |||
| 35–39 | Women | 6437 | 921.6 (137.0) | 46.0 (31.9) | 37.9 (10.8; 141.9) | ≤0.001 | 4.8 (2.9) | 4.1 (1.4; 13.9) | ≤0.001 |
| Men | 4456 | 957.0 (155.3) | 39.9 (28.1) | 32.8 (8.6; 123.8) | 4.0 (2.5) | 3.5 (1.1; 11.4) | |||
| 40–44 | Women | 8315 | 922.8 (138.7) | 41.0 (28.6) | 33.9 (9.7; 123.7) | ≤0.001 | 4.3 (2.7) | 3.7 (1.2; 12.0) | ≤0.001 |
| Men | 5507 | 959.5 (155.2) | 35.2 (24.7) | 29.0 (8.1; 105.5) | 3.5 (2.2) | 3.0 (1.0; 10.3) | |||
| 45–49 | Women | 8643 | 916.6 (137.4) | 35.6 (25.5) | 29.2 (8.3; 109.5) | ≤0.001 | 3.7 (2.4) | 3.2 (1.1; 10.8) | ≤0.001 |
| Men | 5947 | 962.5 (157.7) | 31.6 (22.9) | 26.0 (7.1; 95.5) | 3.2 (2.1) | 2.7 (0.9; 9.3) | |||
| 50–54 | Women | 4907 | 916.9 (135.8) | 31.8 (22.0) | 26.6 (7.5; 96.3) | ≤0.001 | 3.3 (2.1) | 2.9 (1.0; 9.5) | ≤0.001 |
| Men | 3396 | 960.1 (150.1) | 28.7 (20.2) | 23.7 (6.7; 87.5) | 2.9 (1.8) | 2.5 (0.9; 8.5) | |||
| 55–59 | Women | 2422 | 909.0 (132.1) | 27.2 (19.4) | 22.5 (6.7; 83.6) | 0.003 | 2.9 (1.9) | 2.5 (0.9; 8.5) | ≤0.001 |
| Men | 1650 | 961.6 (150.0) | 26.2 (21.9) | 21.0 (5.5; 89.5) | 2.6 (2.0) | 2.2 (0.7; 8.4) | |||
| 60–64 | Women | 1968 | 898.0 (131.1) | 25.2 (20.0) | 20.5 (5.5; 79.3) | 0.025 | 2.7 (2.0) | 2.3 (0.7; 8.5) | ≤0.001 |
| Men | 1342 | 957.9 (150.1) | 24.8 (25.0) | 19.1 (4.8; 86.6) | 2.5 (2.4) | 2.0 (0.6; 9.1) | |||
| 65–69 | Women | 1036 | 888.9 (127.7) | 22.9 (20.6) | 17.8 (5.0; 83.0) | 0.632 | 2.5 (2.2) | 2.0 (0.6; 8.8) | 0.008 |
| Men | 834 | 945.9 (145.7) | 24.4 (24.9) | 17.7 (4.87; 110.5) | 2.5 (2.5) | 1.9 (0.6; 11.4) | |||
| 70–74 | Women | 403 | 890.2 (121.2) | 25.2 (31.3) | 18.3 (5.0; 115.8) | 0.024 | 2.7 (3.2) | 2.0 (0.6; 12.9) | ≤0.001 |
| Men | 355 | 936.3 (139.3) | 27.2 (37.6) | 16.0 (4.7; 161.9) | 2.8 (3.8) | 1.6 (0.5; 16.6) | |||
| 75+ | Women | 172 | 860.5 (131.9) | 24.0 (25.0) | 16.1 (3.5; 106.2) | 0.295 | 2.7 (2.8) | 1.9 (0.5; 14.4) | 0.053 |
| Men | 140 | 931.2 (128.7) | 25.4 (31.8) | 14.9 (3.7; 130.3) | 2.7 (3.3) | 1.6 (0.5; 17.4) | |||
Values are given as mean (SD) and as median (2nd and 98th percentiles).
IBI: inter-beat interval; RMSSD: root mean square of successive differences; cRMSSD: corrected root mean square of successive differences.
a
Differences in RMSSD median values between women and men.