Skip to main content
. Author manuscript; available in PMC: 2024 Jul 11.
Published in final edited form as: J Anesth Transl Med. 2024 May 8;3(2):36–44. doi: 10.1016/j.jatmed.2024.05.001

Table 3.

Accelerated failure time model estimates for time to death for echocardiographic parameters, log troponin, and log BNP.

Variable TR 95% CI
LB		 UB P value b a P value
LV ejection fractionb, % 0.978 0.960 0.996 .017 0.466 < 0.001
LV volumec, mL 0.991 0.983 0.998 .011 0.481 < 0.001
LA volumec, mL 0.992 0.985 0.999 .026 0.297 < 0.001
RV diameterc, cm 0.776 0.608 0.991 .043 0.381 < 0.001
RA volumec, mL 0.987 0.976 0.998 .017 0.445 < 0.001
Ascending aorta sizec, cm 0.723 0.073 7.135 .78 0.708 0.38
Peak E-wavec, m/s 0.938 0.670 1.314 .31 0.493 < 0.001
TV TAPSEc 0.992 0.953 1.033 .69 0.514 0.001
Estimated RVSPc, mmHg 0.999 0.980 1.019 .92 0.343 < 0.001
Estimated RAPc, mmHg 0.970 0.913 1.030 .33 0.360 < 0.001
MV E’ Lateral Velocityc, m/s 0.997 0.983 1.012 .71 0.509 0.001
MV E/E’ Lateralc 0.949 0.881 1.022 .16 0.463 < 0.001
Troponind, log ng/mL 0.826 0.710 0.960 .014 0.488 < 0.001
BNPe, log pmol/L 0.876 0.727 1.056 .17 0.526 .002

Abbreviations: TR, time ratio; CI, confidence interval; LB, 95% confidence interval lower bound; UB, 95% confidence interval upper bound; LV, left ventricle; LA, left atrium; RV, right ventricle; RA, right atrium; TV, tricuspid valve; TAPSE, tricuspid annular plane systolic excursion; RVSP, right ventricle systolic pressure; RAP, right atrial pressure; MV, mitral valve.

a

b is the scale parameter for the log-logistic distribution. The shape parameter is calculated as 1/b.

b

Time ratio represents changes in time to death due to a decrease in one unit.

c

Time ratio represents changes in time to death due to an increase in one unit.

d

Time ratio represents changes in time to death due to a one-unit increase in log troponin, or a 10-fold increase in troponin.

e

Time ratio represents changes in time to death due to a one-unit increase in log BNP, or a 10-fold increase in BNP.