Table 2 Regression residuals.

From: Physiologic heart rate dependency of the PQ interval and its sex differences

Regression model

Females

Males

3 intervals

10 seconds

hysteresis

3 intervals

10 seconds

hysteresis

PQ/RR relationship

linear

8.11 ± 2.45

7.97 ± 2.43

7.33 ± 2.25

7.42 ± 1.97

7.18 ± 1.95

6.68 ± 1.83

log-linear

8.56 ± 2.68

8.43 ± 2.66

7.79 ± 2.46

7.69 ± 2.10

7.42 ± 2.06

6.92 ± 1.94

hyperbolic

7.94 ± 2.39

7.78 ± 2.38

7.11 ± 2.19

7.25 ± 1.90

6.95 ± 1.88

6.47 ± 1.77

curvilinear

  

6.96 ± 2.12

  

6.33 ± 1.73

QT/RR relationship

linear

11.83 ± 2.28

10.73 ± 2.03

5.91 ± 1.18

11.46 ± 2.08

10.57 ± 1.95

5.58 ± 1.09

log-linear

12.67 ± 2.39

11.54 ± 2.15

6.31 ± 1.23

12.09 ± 2.12

11.16 ± 1.95

5.86 ± 1.14

hyperbolic

12.17 ± 2.30

11.07 ± 2.10

6.61 ± 1.43

11.97 ± 2.18

11.04 ± 2.02

6.48 ± 1.42

curvilinear

  

5.68 ± 1.12

  

5.43 ± 1.07

  1. For linear, log-linear and hyperbolic regression models (see the text for details) the table shows regression residuals (mean ± standard deviation, values in milliseconds) for RR interval expressions as the average of 3 RR intervals (3 intervals), the average of 10 seconds of RR intervals (10 seconds) and the individually hysteresis corrected RR intervals (hysteresis). Regression residuals are also shown for the combination of curvilinear regression models with the hysteresis corrected RR intervals. Results of the PQ/RR and QT/RR relationship are shown in the top and bottom part of the table, respectively. The results in females and males are shown in the left and right parts of the table, respectively.
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