TABLE 2.
Regression Analysis Details
| Outcome variablea | Costs | Utilization | ||||
|---|---|---|---|---|---|---|
| Total cost of care | Medication costs | ED visits | Hospital admissions | Hospital bed days | Hospital readmissions | |
| Estimated treatment effect | ||||||
| Intervention received | −0.214 | −0.19 | −0.164 | −0.099 | −0.107 | −0.027 |
| Change, % | −19.3 | −17.3 | −15.1 | −9.4 | −10.2 | −2.7 |
| P valueb | <0.001 | < 0.001 | 0.002 | 0.008 | 0.01 | 0.149 |
| SE | 0.023 | 0.024 | 0.052 | 0.037 | 0.042 | 0.019 |
| Covariant, n (P value) | ||||||
| Intercept | 6.56 (0.001) | 5.748 (0.001) | −8.18 (0.001) | −8.82 (0.001) | −8.77 (0.001) | −9.159 (0.001) |
| Daysc | 0 (0.001) | 0 (0.001) | 0 (0.998) | 0 (0.197) | 0 (0.209) | 0 (0.038) |
| Days squaredd | 0 (0.001) | 0 (0.001) | 0 (0.492) | 0 (0.877) | 0 (0.877) | 0 (0.455) |
| Indicator variables for participation in another plan program, n (P value) | ||||||
| BH | 0.206 (0.001) | 0.041 (0.344) | 0.11 (0.172) | 0.10 (0.070) | 0.12 (0.049) | 0.075 (0.008) |
| CA | 0.122 (0.225) | −0.169 (0.110) | −0.21 (0.259) | −0.06 (0.652) | −0.10 (0.520) | −0.239 (0.001) |
| HHP | 0.122 (0.014) | 0.140 (0.007) | 0.22 (0.048) | −0.01 (0.908) | −0.01 (0.880) | 0.013 (0.755) |
| INS | 0.321 (0.001) | 0.275 (0.001) | 0.22 (0.001) | 0.20 (0.001) | 0.22 (0.001) | 0.055 (0.005) |
| Landmarke | 0.282 (0.001) | 0.329 (0.001) | 0.29 (0.001) | 0.23 (0.001) | 0.27 (0.001) | 0.072 (0.002) |
| LI | 0.397 (0.002) | 0.078 (0.556) | 0.18 (0.531) | 0.27 (0.184) | 0.30 (0.188) | 0.028 (0.787) |
| LTC resident | 1.112 (0.001) | 0.213 (0.022) | 0.71 (0.001) | 1.50 (0.001) | 1.80 (0.001) | 0.921 (0.001) |
| LTC services | 0.203 (0.218) | 0.321 (0.062) | −0.55 (0.107) | −1.39 (0.001) | −1.61 (0.001) | −0.793 (0.001) |
| Med AB | −2.277 (0.001) | −3.180 (0.001) | −0.58 (0.001) | −0.31 (0.005) | −0.35 (0.005) | −0.097 (0.089) |
| MyPathf | 0.024 (0.757) | 0.069 (0.384) | −0.63 0.001) | 0.11 (0.336) | 0.10 (0.458) | 0.229 (0.001) |
| PAIN | 1.121 (0.001) | 0.306 (0.055) | 0.17 (0.625) | −0.03 (0.891) | −0.04 (0.885) | −0.111 (0.379) |
| ToC | 0.530 (0.001) | 0.154 (0.244) | −0.42 (0.152) | −0.31 (0.135) | −0.32 (0.166) | −0.053 (0.618) |
aAll outcome variables have been log transformed.
bTreatment P values adjusted with Holm-Bonferroni. Costs were adjusted as a family of 2, and utilizations were adjusted as a family of 4.
cNumber of days since start of observation window.
dThe square of the days variable.
eIn-home care and education.
fHome-based care for advanced disease patients.
BH = behavioral health integration & complex care initiative; CA = community-based adult services; ED = emergency department; HHP = health homes program; INS = in-home support services; LI = Medicare low-income subsidy; LTC = long-term care; Med AB = Medicare Part A or B; PAIN = pain management center of excellence; SE = standard error; ToC = transitions of care management.