Table 1 Results from Poisson GAMMs for the longitudinal effects of CVP on B-line scores.

From: Intraoperative B-line scores increase over time and are minimally affected by central venous pressure during transurethral resection of the prostate

Models

Random intercept variance

Adjusted pseudo-R2

Log-likelihood (REML)

Time effect

CVP effect

Interaction effect (time × CVP)

Model 1

 < 0.001

0.553

− 355.141

F = 69.486, P < 0.001

F = 3.720, P = 0.054

F = 1.879, P = 0.171

Model 2

 < 0.001

0.553

− 355.084

F = 66.026, P < 0.001

F = 3.619, P = 0.058

F = 1.897, P = 0.169

Model 3

 < 0.001

0.553

− 354.822

F = 62.140, P < 0.001

F = 4.026, P = 0.045

F = 1.967, P = 0.161

Model 4

 < 0.001

0.553

− 354.820

F = 62.029, P < 0.001

F = 3.156, P = 0.076

F = 1.441, P = 0.231

  1. Model 1: unadjusted; Model 2: adjusted for age, weight, and height; Model 3: adjusted for age, weight, height, and effective tidal volume; Model 4: adjusted for age, weight, height, effective tidal volume, and intraoperative use of furosemide. Random effects included only a patient-specific random intercept (random = list(patient_id =  ~ 1)). Pseudo-R2 (deviance explained) was computed as \(1-\frac{\text{residual deviance}}{\text{null deviance}}\), representing the proportion of deviance explained by the model. Models were fitted using restricted maximum likelihood (REML). GAMM, generalized additive mixed model; CVP, central venous pressure.
Back to article page