TABLE 4.
Performance of targeted learning and estimating equation estimators by study within the HAL-based simulations
| Method | Study ID | TrueATE | Variance | Bias | MSE | rMSE | Coverage | Coverage2 | CIwidth |
|---|---|---|---|---|---|---|---|---|---|
| A-IPTW | 1 | −0.0109 | 0.0056 | −0.0373 | 0.0070 |
|
0.704 | 0.912 | 0.1658 |
| 2 | 0.0507 | 0.0005 | −0.0012 | 0.0005 |
|
0.934 | 0.958 | 0.0849 | |
| 3 | 0.0007 | 0.0003 | 0.0007 | 0.0003 |
|
0.954 | 0.948 | 0.0737 | |
| 4 | −0.0468 | 0.0019 | 0.0109 | 0.0020 |
|
0.928 | 0.950 | 0.1612 | |
| 5 | −0.0136 | 0.0020 | −0.0046 | 0.0020 |
|
0.926 | 0.952 | 0.1640 | |
| 6 | 0.2523 | 0.0010 | −0.0266 | 0.0017 |
|
0.672 | 0.868 | 0.0829 | |
| 7 | −0.0310 | 0.0012 | 0.0093 | 0.0013 |
|
0.862 | 0.938 | 0.1098 | |
| 8 | −0.0442 | 0.0037 | 0.0037 | 0.0037 |
|
0.914 | 0.952 | 0.2112 | |
| 9 | 0.0089 | 0.0001 | −0.0005 | 0.0001 |
|
0.940 | 0.948 | 0.0362 | |
| 10 | 0.0203 | 0.0006 | −0.0001 | 0.0006 |
|
0.954 | 0.954 | 0.0961 | |
| C-TMLE | 1 | −0.0109 | 0.0219 | −0.0947 | 0.0309 |
|
0.836 | 0.890 | 0.4956 |
| 2 | 0.0507 | 0.0006 | 0.0016 | 0.0006 |
|
0.956 | 0.954 | 0.0993 | |
| 3 | 0.0007 | 0.0004 | 0.0018 | 0.0004 |
|
0.948 | 0.948 | 0.0782 | |
| 4 | −0.0468 | 0.0026 | 0.0046 | 0.0026 |
|
0.948 | 0.950 | 0.2005 | |
| 5 | −0.0136 | 0.0027 | −0.0087 | 0.0027 |
|
0.928 | 0.950 | 0.1882 | |
| 6 | 0.2523 | 0.0011 | −0.0124 | 0.0012 |
|
0.942 | 0.944 | 0.1295 | |
| 7 | −0.0310 | 0.0025 | 0.0012 | 0.0025 |
|
0.936 | 0.948 | 0.1875 | |
| 8 | −0.0442 | 0.0049 | −0.0014 | 0.0049 |
|
0.922 | 0.960 | 0.2524 | |
| 9 | 0.0089 | 0.0001 | −0.0008 | 0.0001 |
|
0.942 | 0.950 | 0.0409 | |
| 10 | 0.0203 | 0.0006 | 0.0007 | 0.0006 |
|
0.952 | 0.940 | 0.1037 | |
| CV-A-IPTW | 1 | −0.0109 | 0.0565 | −0.0262 | 0.0572 |
|
0.926 | 0.954 | 0.7789 |
| 2 | 0.0507 | 0.0006 | 0.0031 | 0.0006 |
|
0.960 | 0.954 | 0.0985 | |
| 3 | 0.0007 | 0.0004 | 0.0009 | 0.0004 |
|
0.966 | 0.950 | 0.0793 | |
| 4 | −0.0468 | 0.0025 | 0.0063 | 0.0025 |
|
0.956 | 0.948 | 0.2008 | |
| 5 | −0.0136 | 0.0024 | −0.0062 | 0.0024 |
|
0.940 | 0.946 | 0.1881 | |
| 6 | 0.2523 | 0.0012 | −0.0045 | 0.0012 |
|
0.938 | 0.944 | 0.1301 | |
| 7 | −0.0310 | 0.0020 | 0.0030 | 0.0020 |
|
0.936 | 0.940 | 0.1737 | |
| 8 | −0.0442 | 0.0045 | 0.0000 | 0.0045 |
|
0.950 | 0.952 | 0.2553 | |
| 9 | 0.0089 | 0.0001 | −0.0002 | 0.0001 |
|
0.942 | 0.948 | 0.0394 | |
| 10 | 0.0203 | 0.0006 | 0.0011 | 0.0006 |
|
0.962 | 0.944 | 0.1026 | |
| CV-IPTW | 1 | −0.0109 | 0.1632 | −0.1129 | 0.1759 |
|
0.984 | 0.944 | 2.3263 |
| 2 | 0.0507 | 0.0008 | −0.0012 | 0.0008 |
|
1.000 | 0.948 | 0.2686 | |
| 3 | 0.0007 | 0.0005 | 0.0020 | 0.0005 |
|
1.000 | 0.954 | 0.1831 | |
| 4 | −0.0468 | 0.0032 | 0.0270 | 0.0040 |
|
1.000 | 0.936 | 0.5065 | |
| 5 | −0.0136 | 0.0028 | −0.0202 | 0.0032 |
|
0.982 | 0.936 | 0.2817 | |
| 6 | 0.2523 | 0.0014 | −0.0057 | 0.0014 |
|
1.000 | 0.954 | 0.3305 | |
| 7 | −0.0310 | 0.0033 | 0.0017 | 0.0033 |
|
1.000 | 0.948 | 0.5111 | |
| 8 | −0.0442 | 0.0062 | 0.0006 | 0.0062 |
|
1.000 | 0.948 | 0.6842 | |
| 9 | 0.0089 | 0.0001 | 0.0143 | 0.0003 |
|
0.998 | 0.756 | 0.1016 | |
| 10 | 0.0203 | 0.0007 | 0.0006 | 0.0007 |
|
1.000 | 0.956 | 0.2451 | |
| CV-TMLE | 1 | −0.0109 | 0.1868 | −0.0291 | 0.1876 |
|
0.590 | 0.938 | 0.7006 |
| 2 | 0.0507 | 0.0006 | 0.0031 | 0.0006 |
|
0.958 | 0.966 | 0.0985 | |
| 3 | 0.0007 | 0.0004 | 0.0009 | 0.0004 |
|
0.966 | 0.958 | 0.0793 | |
| 4 | −0.0468 | 0.0025 | 0.0064 | 0.0025 |
|
0.956 | 0.954 | 0.2008 | |
| 5 | −0.0136 | 0.0024 | −0.0063 | 0.0024 |
|
0.940 | 0.958 | 0.1881 | |
| 6 | 0.2523 | 0.0013 | 0.0046 | 0.0013 |
|
0.936 | 0.958 | 0.1301 | |
| 7 | −0.0310 | 0.0020 | 0.0030 | 0.0020 |
|
0.938 | 0.946 | 0.1737 | |
| 8 | −0.0442 | 0.0044 | 0.0000 | 0.0044 |
|
0.950 | 0.964 | 0.2551 | |
| 9 | 0.0089 | 0.0001 | −0.0002 | 0.0001 |
|
0.942 | 0.952 | 0.0394 | |
| 10 | 0.0203 | 0.0006 | 0.0011 | 0.0006 |
|
0.962 | 0.956 | 0.1026 | |
| IPTW | 1 | −0.0109 | 0.0280 | −0.0736 | 0.0334 |
|
0.890 | 0.932 | 0.5945 |
| 2 | 0.0507 | 0.0008 | −0.0028 | 0.0008 |
|
1.000 | 0.948 | 0.2544 | |
| 3 | 0.0007 | 0.0005 | 0.0022 | 0.0005 |
|
1.000 | 0.954 | 0.1789 | |
| 4 | −0.0468 | 0.0033 | 0.0276 | 0.0040 |
|
1.000 | 0.926 | 0.4889 | |
| 5 | −0.0136 | 0.0028 | −0.0201 | 0.0032 |
|
0.978 | 0.940 | 0.2712 | |
| 6 | 0.2523 | 0.0014 | −0.0091 | 0.0015 |
|
0.998 | 0.942 | 0.2536 | |
| 7 | −0.0310 | 0.0033 | 0.0023 | 0.0033 |
|
1.000 | 0.946 | 0.4838 | |
| 8 | −0.0442 | 0.0062 | 0.0003 | 0.0062 |
|
1.000 | 0.950 | 0.6504 | |
| 9 | 0.0089 | 0.0001 | 0.0172 | 0.0004 |
|
0.992 | 0.684 | 0.0990 | |
| 10 | 0.0203 | 0.0007 | 0.0007 | 0.0007 |
|
1.000 | 0.958 | 0.2410 | |
| TMLE | 1 | −0.0109 | 0.3860 | −0.3235 | 0.4906 |
|
0.100 | 0.920 | 0.1681 |
| 2 | 0.0507 | 0.0006 | 0.0005 | 0.0006 |
|
0.932 | 0.960 | 0.0849 | |
| 3 | 0.0007 | 0.0004 | 0.0007 | 0.0004 |
|
0.946 | 0.948 | 0.0737 | |
| 4 | −0.0468 | 0.0020 | 0.0099 | 0.0021 |
|
0.916 | 0.950 | 0.1611 | |
| 5 | −0.0136 | 0.0022 | −0.0052 | 0.0022 |
|
0.922 | 0.948 | 0.1640 | |
| 6 | 0.2523 | 0.0010 | −0.0015 | 0.0010 |
|
0.806 | 0.942 | 0.0828 | |
| 7 | −0.0310 | 0.0013 | 0.0079 | 0.0014 |
|
0.852 | 0.932 | 0.1098 | |
| 8 | −0.0442 | 0.0040 | 0.0020 | 0.0040 |
|
0.900 | 0.952 | 0.2111 | |
| 9 | 0.0089 | 0.0001 | −0.0003 | 0.0001 |
|
0.936 | 0.948 | 0.0362 | |
| 10 | 0.0203 | 0.0006 | 0.0001 | 0.0006 |
|
0.952 | 0.954 | 0.0961 |
Abbreviations: Coverage, coverage using 95% Wald-type confidence intervals (CI) based upon standard error estimates, where “Coverage2” uses the true sample variance; CI width, average width of the “Coverage” CI’s; Variance, true sample variance; MSE, mean-squared error; rMSE, relative (to the IPTW estimator in denominator) mean-squared error.