Table 2 |
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|
Type I Error Probabilities of Methods for Missing Data Percentages (10% and 40%) and Mechanisms |
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| Method |
Missing Percentage |
MCAR |
MAR |
MAR/MNAR |
MNAR |
|
|
|||||
| SSSa |
10% |
0.0920 |
0.0895 |
0.0875 |
0.0895 |
| 40% |
0.0945 |
0.1035 |
0.1050 |
0.1115 |
|
| Modified SSSb (Dawson Weight) |
10% |
0.0615 |
0.0580 |
0.0580 |
0.0585 |
| 40% |
0.0525 |
0.0520 |
0.0495 |
0.0555 |
|
| Modified SSSb (Population Weight) |
10% |
0.0600 |
0.0585 |
0.0585 |
0.0585 |
| 40% |
0.0535 |
0.0520 |
0.0535 |
0.0540 |
|
| Modified SSSb (SSTime Weight) |
10% |
0.0615 |
0.0590 |
0.0575 |
0.0590 |
| 40% |
0.0540 |
0.0535 |
0.0575 |
0.0525 |
|
| Fisherc |
10% |
0.0495 |
0.0555 |
0.0495 |
0.0510 |
| 40% |
0.0495 |
0.0445 |
0.0505 |
0.0460 |
|
| Weighted Z-Transformd |
10% |
0.0575 |
0.0595 |
0.0580 |
0.0570 |
| 40% |
0.0545 |
0.0550 |
0.0525 |
0.0530 |
|
|
|
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|
*Type I error, r = .6, n = 100, simulations = 2000 *a, b, c, d indicate the methods of analysis in the text |
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|
Hedden et al. Substance Abuse Treatment, Prevention, and Policy 2008 3:13 doi:10.1186/1747-597X-3-13 |
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