Model comparisons: All paths significant by χ² and AIC comparison except for the HRV with Depression path.

Note: Model 1 was used as a baseline for all comparisons. N = neuroticism, CVD = cardiovascular disease, HRV = heart rate variability; EP = Estimated Parameters; AIC = Akaike Information Criterion; -2LL = -2× Log likelihood. Model comparisons: All paths significant by χ2 and AIC comparison except for the HRV with Depression path.