Table 2.
Multi-level analysis of average medical costs (excluding psychiatric services and AOD treatment costs)
| Fixed Effect | Co-efficient | Standard Error | P-value | |
|---|---|---|---|---|
| Intercept* (π0) | Intercept (β00 = γ000) | 63.40 | 9.42 | < .01 |
|
Age group (β01 = γ010) (Reference group: Age <=18) |
46.02 | 10.94 | < .01 | |
| Pre-Intake Cost* (β02 = γ020) | 0.37 | 0.04 | < .01 | |
| Year (Slope)*(π1) | Intercept (β10) | |||
| Intercept (γ100) | -4.82 | 4.10 | 0.24 | |
| Non-abstinent family member (γ101) | 10.32 | 4.72 | 0.03 | |
| Abstinent family member (γ102) (Reference group: Control family member) |
5.60 | 3.59 | 0.12 | |
|
Age group (β11 = γ 110) (Reference group: Age <=18) |
16.11 | 6.12 | 0.01 |
| Random Effects | Variance Component | Degrees of Freedom | P-value | |
|---|---|---|---|---|
| Level-1 (temporal) Variance | 400.94 | |||
| Level-2 (individual within families) Variance | ||||
| Initial Status | 384.31 | 4552 | 0.00 | |
| Slope | 238.06 | 8153 | 0.00 | |
| Level-3 (between families) Variance | 0.46 | 3600 | 0.00 |