Table 5.
Summary statistics for coefficients from simulation study with partial correlation of .8 and sample size of 500.
(ρxy, ρxz, ρyz) = (.9,.83,.7), ρxy.z = .8, τxy.z = 1.1,n = 500 | |||||||||
---|---|---|---|---|---|---|---|---|---|
Pearson correlation | Fisher-z | ||||||||
Full | CC | EM | MI | Full | CC | EM | MI | ||
20% missing | |||||||||
E(Bias) | 0 | −0.013 | −0.002 | −0.002 | 0.002 | −0.032 | −0.004 | −0.004 | |
E(SE) | 0.027 | 0.031 | 0.032 | 0.029 | 0.045 | 0.050 | 0.089 | 0.046 | |
|
0.017 | 0.023 | 0.019 | 0.019 | 0.047 | 0.061 | 0.052 | 0.052 | |
RE | 1 | 1.94 | 1.27 | 1.28 | 1 | 1.70 | 1.23 | 1.25 | |
95% Cov | 0.997 | 0.991 | 0.998 | 0.998 | 0.941 | 0.89 | 0.999 | 0.915 | |
35% missing | |||||||||
E(Bias) | 0 | −0.019 | −0.004 | −0.004 | 0.002 | −0.048 | −0.01 | −0.008 | |
E(SE) | 0.027 | 0.035 | 0.034 | 0.030 | 0.045 | 0.056 | 0.092 | 0.048 | |
|
0.016 | 0.028 | 0.02 | 0.02 | 0.045 | 0.072 | 0.055 | 0.055 | |
RE | 1 | 3.0 | 1.54 | 1.57 | 1 | 2.55 | 1.46 | 1.50 | |
95% Cov | 0.999 | 0.995 | 0.999 | 0.998 | 0.948 | 0.858 | 1 | 0.911 | |
50% missing | |||||||||
E(Bias) | 0 | −0.026 | −0.01 | −0.009 | 0.002 | −0.065 | −0.024 | −0.021 | |
E(SE) | 0.027 | 0.040 | 0.036 | 0.033 | 0.045 | 0.064 | 0.097 | 0.051 | |
|
0.016 | 0.037 | 0.025 | 0.025 | 0.046 | 0.092 | 0.067 | 0.067 | |
RE | 1 | 4.932 | 2.36 | 2.34 | 1 | 3.97 | 2.09 | 2.09 | |
95% Cov | 0.999 | 0.984 0.997 | 0.995 | 0.955 | 0.821 | 0.997 | 0.886 |
Note: full data (Full), complete case analysis (CC), the expectation-maximization algorithm (EM), multiple imputation (MI), standard error (SE), mean squared error (MSE), relative efficiency (RE), and 95% coverage probabilities (95% Cov)