| Mixed Effects Model for log{FEV1/(Ht**2)} with Random Intercept |
| Six Cities Study |
| Model Information | |
|---|---|
| Data Set | WORK.FEV |
| Dependent Variable | y |
| Covariance Structure | Variance Components |
| Subject Effect | id |
| Estimation Method | REML |
| Residual Variance Method | Profile |
| Fixed Effects SE Method | Model-Based |
| Degrees of Freedom Method | Containment |
| Class Level Information | ||
|---|---|---|
| Class | Levels | Values |
| id | 299 | not printed |
| Dimensions | |
|---|---|
| Covariance Parameters | 2 |
| Columns in X | 2 |
| Columns in Z Per Subject | 1 |
| Subjects | 299 |
| Max Obs Per Subject | 12 |
| Number of Observations | |
|---|---|
| Number of Observations Read | 1993 |
| Number of Observations Used | 1993 |
| Number of Observations Not Used | 0 |
| Iteration History | |||
|---|---|---|---|
| Iteration | Evaluations | -2 Res Log Like | Criterion |
| 0 | 1 | -2932.03205542 | |
| 1 | 2 | -4477.84505482 | 0.00001245 |
| 2 | 1 | -4477.89691516 | 0.00000002 |
| 3 | 1 | -4477.89698419 | 0.00000000 |
| Convergence criteria met. |
| Estimated G Matrix | |||
|---|---|---|---|
| Row | Effect | id | Col1 |
| 1 | Intercept | 1 | 0.009305 |
| Covariance Parameter Estimates | |||||
|---|---|---|---|---|---|
| Cov Parm | Subject | Estimate | Standard Error | Z Value | Pr > Z |
| Intercept | id | 0.009305 | 0.000849 | 10.97 | <.0001 |
| Residual | 0.004190 | 0.000144 | 29.14 | <.0001 | |
| Fit Statistics | |
|---|---|
| -2 Res Log Likelihood | -4477.9 |
| AIC (smaller is better) | -4473.9 |
| AICC (smaller is better) | -4473.9 |
| BIC (smaller is better) | -4466.5 |
| Solution for Fixed Effects | |||||
|---|---|---|---|---|---|
| Effect | Estimate | Standard Error | DF | t Value | Pr > |t| |
| Intercept | -0.3552 | 0.008179 | 298 | -43.42 | <.0001 |
| age | 0.02981 | 0.000473 | 1693 | 62.99 | <.0001 |
| Type 3 Tests of Fixed Effects | ||||||
|---|---|---|---|---|---|---|
| Effect | Num DF | Den DF | Chi-Square | F Value | Pr > ChiSq | Pr > F |
| age | 1 | 1693 | 3967.87 | 3967.87 | <.0001 | <.0001 |