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. Author manuscript; available in PMC: 2010 Sep 8.
Published in final edited form as: Circulation. 2009 Aug 24;120(10):859–866. doi: 10.1161/CIRCULATIONAHA.108.787408

Table 2.

Relationship between age and time to peak strain, strain rate and their standard deviations as indicators of myocardial dyssynchrony. (n=1,100)

parameter Model 1 Model 2 Model 3
RC* 95%CI (p) RC* 95%CI (p) RC* 95%CI (p)
Time to peak
systolic strain		 0.37 0.05 to 0.70
(0.025)		 0.42 0.085 to 0.75
(0.014)		 0.49 0.14 to 0.86
(0.007)
Time to peak
systolic strain rate		 −0.19 −0.37 to −0.007
(0.042)		 −0.15 −0.33 to 0.04
(0.11)		 −0.09 −0.29 to 0.12
(0.41)
SD of time to peak
systolic strain		 0.43 0.25 to 0.62
(<0.001)		 0.39 0.21 to 0.59
(<0.001)		 0.33 0.12 to 0.53
(0.002)
SD of time to peak
systolic strain rate		 0.13 −0.009 to 0.27
(0.067)		 0.15 0.015 to 0.29
(0.030)		 0.15 0.003 to 0.31
(0.045)
*

RC - ms/year of age, p for significance, SD-standard deviation.

Model 1 - Unadjusted. Model 2- adjusted for gender, ethnicity and BMI.

Model 3 - adjusted for #1+ smoking, blood pressure, DM, lipids, medications