Table 3.
Differences among participants’ demographic variables, HRV parameters, and PSQI global score.
| Variables | HRV Parameters | PSQI Global Score | ||||||
|---|---|---|---|---|---|---|---|---|
| HR | SDNN | RMSSD | TP | LF | HF | LF/HF | ||
| Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | |
| Education level | ||||||||
| College | 76.88 (12.20) | 50.28 (19.08) | 41.17 (17.91) | 2112.40 (1444.95) | 912.57 (940.10) | 523.17 (404.04) | 1.54 (2.22) | 10.19 (2.89) |
| University | 82.06 (10.97) | 43.15 (15.13) | 32.29 (19.57) | 1573.42 (950.66) | 723.65 (502.34) | 540.74 (552.45) | 0.3 (0.57) | 10.31 (2.23) |
| t (p) | −1.64 (0.692) | 1.17 (0.502) | 1.37 (0.378) | 1.22 (0.491) | 1.22 (0.479) | 0.36 (0.971) | 1.46 (0.430) | −0.27 (0.676) |
| Marital status | ||||||||
| Married | 79.50 (12.53) | 49.27 (14.89) | 36.70 (12.48) | 1875.49 (1261.64) | 606.19 (499.89) | 570.78 (438.30) | 1.75 (3.66) | 10.11 (2.89) |
| Unmarried | 78.50 (11.89) | 47.21 (18.95) | 38.37 (20.55) | 1931.90 (1334.54) | 919.83 (876.92) | 516.45 (468.25) | 1.10 (0.71) | 10.26 (2.82) |
| t (p) | 0.25 (.803) | 0.34 (0.733) | −0.26 (0.792) | −0.12 (0.898) | −1.17 (0.246) | 0.35 (0.724) | 1.04 (0.558) | −0.48 (0.961) |
| Number of children | ||||||||
| None | 78.90 (11.77) | 48.16 (18.83) | 38.54 (19.99) | 1992.42 (1362.31) | 902.32 (860.17) | 509.08 (451.66) | 1.38 (2.02) | 10.28 (2.85) |
| 1 | 87.33 (17.61) | 29.15 (6.02) | 23.66 (6.85) | 817.91 (430.06) | 207.44 (114.01) | 440.82 (205.35) | 0.36 (0.14) | 9.73 (2.76) |
| 2 | 71.20 ± (8.28) | 55.18 (6.86) | 42.18 (11.91) | 2120.93 (1025.59) | 782.96 (519.77) | 813.85 (604.49) | 0.78 (0.69) | 10.22 (2.86) |
| F (p) | 1.27 (0.295) | 1.40 (0.254) | 0.66 (0.580) | 0.89 (0.475) | 0.69 (0.449) | 0.86 (0.559) | 0.39 (0.467) | 0.50 (0.671) |
| Shift work | ||||||||
| Yes | 78.98 (12.07) | 47.37 (18.21) | 37.67 (19.13) | 1876.98 (1315.74) | 816.85 (814.07) | 531.20 (466.97) | 1.23 (1.90) | 10.24 (2.86) |
| No | 73.00 (7.07) | 55.86 (5.44) | 45.25 (7.70) | 2911.54 (124.17) | 1509.48 (171.66) | 488.5 (12.41) | 1.86 (0.02) | 10.00 (2.80) |
| t (p) | −0.69 (0.493) | 0.65 (0.517) | 0.55 (0.582) | 4.94 ** (<0.01) | 4.10 ** (0.018) | −0.12 (0.899) | 0.46 (0.643) | 0.71 (0.834) |
HR: heart rate; SDNN: standard deviation of normal to normal HRV; RMSSD: root mean square of the successive difference in HRV; TP: total power HRV; LF: low-frequency HRV; HF: high-frequency HRV; LF/HF: low-frequency power to high-frequency power ratio; SD: standard deviation.