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. 2016 Feb 17;115(4):1988–1999. doi: 10.1152/jn.01120.2015

Table 3.

Regression analyses for QT/RR

F-test for nonconstant model
F-test F = 11.7 F# = 3.077 P = 1.01e-6**
Estimated coefficients of linear regression model
Estimate SE t-Statistic P
Intercept 40.13 1.8352 21.866 3.19e-42**
Age −0.3247 0.0958 −3.390 9.65e-4**
BMI −0.0582 0.1034 −0.563 0.575
Sex 3.5831 0.9172 3.907 1.61e-4**
Lilliefors test for non-normality of residuals
Lilliefors test D = 0.0798 D# = 0.0826 P = 0.068

The relative QT interval significantly covaries with age and sex but not BMI.

**

P < 0.01 (highly significant).