Table 4.
Comparison of results from three methods of regression analysis (Change in Barthel)
| |
|
OLS on complete cases n = 688 [1]a |
OLS on MI dataset n = 1105 cases [2]b |
Heckman on complete cases n = 1105, 417 obs censored [3]c |
|||
|---|---|---|---|---|---|---|---|
| Variables | Coeff | S.E. | Coeff | S.E. | Coeff | S.E. | |
| Episode Characteristics |
Age in 2003 |
−0.010 |
0.009 |
−0.009 |
0.007 |
−0.011 |
0.009 |
| Gender |
−0.007 |
0.208 |
0.097 |
0.164 |
0.037 |
0.218 |
|
| Lives alone |
0.225 |
0.190 |
0.181 |
0.150 |
0.320 |
0.202 |
|
| Barthel score at admission |
−0.318 |
0.028** |
−0.325 |
0.022** |
−0.305 |
0.030** |
|
| EQ5D score at admission |
−0.343 |
0.312 |
−0.428 |
0.239 |
−0.216 |
0.328 |
|
| Descriptors of IC Service |
Acute Admission Avoidance Service |
0.103 |
0.218 |
0.060 |
0.167 |
0.728 |
0.337* |
| Duration of Service Provision |
0.008 |
0.003* |
0.011 |
0.003** |
0.006 |
0.003* |
|
| Descriptors of IC-related Services |
Transfer before IC end |
4.084 |
2.452 |
0.559 |
0.607 |
2.713 |
2.348 |
| Completed Episode |
7.438 |
2.440** |
3.443 |
0.587** |
4.926 |
2.478* |
|
| Other IC Outcome |
6.640 |
2.477** |
2.921 |
0.656** |
4.727 |
2.432 |
|
| Patient died (Reference group) |
|
|
|
|
|
|
|
| Alternative to IC – Other |
−1.130 |
0.291** |
−1.076 |
0.221** |
−1.267 |
0.291** |
|
| Alternative to IC – Home |
−0.709 |
0.223** |
−0.667 |
0.169** |
−0.669 |
0.219** |
|
| Alternative to IC – Hospital (Reference Group) |
|
|
|
|
|
|
|
| Interactions | Barthel score at admission*Type of IC |
−0.071 |
0.050 |
−0.035 |
0.027 |
−0.072 |
0.051 |
| Acute Admission Avoidance Service* Type of IC |
0.592 |
0.575 |
0.131 |
0.354 |
0.599 |
0.589 |
|
| Duration of Service Provision*Type of IC |
−0.006 |
0.008 |
0.001 |
0.006 |
−0.006 |
0.008 |
|
| Transfer before IC end*Type of IC |
−0.299 |
0.979 |
−0.160 |
0.411 |
−0.300 |
0.962 |
|
| Completed Episode*Type of IC |
1.053 |
0.830 |
0.374 |
0.424 |
1.055 |
0.816 |
|
| Other IC Outcome*Type of IC |
0.189 |
2.000 |
0.072 |
0.889 |
0.200 |
1.980 |
|
| Patient died*Type of IC (Reference group) |
|
|
|
|
|
|
|
| Alternative to IC – Other *Type of IC |
0.796 |
0.793 |
0.968 |
0.543 |
0.795 |
0.778 |
|
| Alternative to IC – Home*Type of IC |
2.261 |
1.025* |
0.124 |
0.447 |
2.261 |
1.006* |
|
| Alternative to IC – Hospital *Type of IC (Reference Group) |
|
|
|
|
|
|
|
| _constant |
0.046 |
2.536 |
3.888 |
0.843 |
2.687 |
2.592 |
|
| N |
|
713 |
1,105 |
|
|
713 |
|
| Censored obs |
|
|
|
|
|
392 |
|
| R-Squared |
|
0.278 |
|
|
|
0.634 |
|
| Rho | 0.950 | ||||||
*5% level of significance, **1% level of significance;
Dependent variable: change in Barthel, IC = Intermediate care;
aMethod 1 assumes that missing data are MCAR; bMethod 2 assumes that missing data are MAR; cMethod 3 assumes that missing data are MNAR.