Table 2. Results of applications of joint models with shared random effects (JM-SRE) to measurements of LPC 15:0/0:0 and mortality data in the LLFS: Estimates of the association parameters for the random intercepts and random slopes of the metabolite in the survival sub-model.
Model | Sex | Variable | α0 (α1) | HR | 95% CI for HR | SD of Variable |
int | F+M | b0i | −0.436 | 0.786 | (0.728, 0.840) | 0.553 |
intslope | F+M | b0i | −0.452 | 0.775 | (0.726, 0.846) | 0.563 |
intslope | F+M | b1i | −0.765 | 0.998 | (0.994, 1.004) | 0.002 |
int | F | b0i | −0.428 | 0.783 | (0.709, 0.858) | 0.572 |
intslope | F | b0i | −0.408 | 0.778 | (0.694, 0.865) | 0.615 |
intslope | F | b1i | −0.084 | 0.999 | (0.973, 1.041) | 0.011 |
int | M | b0i | −0.461 | 0.785 | (0.711, 0.854) | 0.525 |
intslope | M | b0i | −0.439 | 0.780 | (0.698, 0.855) | 0.568 |
intslope | M | b1i | −0.238 | 0.997 | (0.956, 1.006) | 0.011 |
Model – type of joint model (int – random intercept of LPC in survival sub-model, intslope – random intercept and slope of LPC in survival sub-model), see section Joint models: General specifications; Variable – b0i: random intercept of the metabolite, b1i: random slope of the metabolite; α0 (α1) – estimates of the regression parameters for b0i (b1i) in respective models; HR – hazard ratios for an increase by a standard deviation of Variable; 95% CI for HR – respective 95% confidence intervals for HRs; SD of Variable – standard deviation of Variable. Highlighted in bold are cases where confidence intervals do not contain one. The JM were estimated using R-package joineR. LPC values were transformed (see section Data).