|Fixed Effect||Beta||SE||p Value|
|Family history of DCM||−3.21||4.12||0.44|
|NYHA functional class|
|Days post-partum at entry||−0.11||0.048||0.02|
|SBP, mm Hg||0.016||0.07||0.83|
|DBP, mm Hg||−0.044||0.102||0.66|
|Heart rate, beats/min||−0.08||0.07||0.26|
Significant univariate predictors of LVEF at 12 months included race, baseline LVEF, BMI, and days post-partum to study entry. The beta coefficient represents the slope or the number of units the outcome variable changes with 1-unit change in the predictor variable. These factors were then included in a multivariate model that also included an interaction term for race and baseline LVEF (significant interaction of race baseline LVEF for their impact on 12-month LVEF: beta = 0.72; SE = 0.23; p = 0.002). Only race and LVEDD remain significant in the multivariate analysis.
BMI = body mass index; DCM = dilated cardiomyopathy; other abbreviations as in Table 1.