Table 3.
SAS output listing from PROC NLMIXED code
| The NLMIXED procedure Specifications | |||||||||
| Specifications | |||||||||
| Data Set | COUPLESHCV | ||||||||
| Dependent Variable | aHCV | ||||||||
| Distribution for Dependent Variable | Binary | ||||||||
| Random Effects | u | ||||||||
| Distribution for Random Effects | Normal | ||||||||
| Subject Variable | id | ||||||||
| Optimization Technique | Newton-Raphson | ||||||||
| Integration Method | Adaptive Gaussian | ||||||||
| Quadrature | |||||||||
| Dimensions | |||||||||
| Observations Used | 530 | ||||||||
| Observations Not Used | 0 | ||||||||
| Total Observations | 530 | ||||||||
| Subjects | 265 | ||||||||
| Max Obs Per Subject | 2 | ||||||||
| Parameters | 6 | ||||||||
| Quadrature Points | 20 | ||||||||
| Parameters | |||||||||
| beta0 | beta1 | beta2 | beta3 | beta4 | s2u | NegLogLike | |||
| -1.794 | -0.1762 | 3.0536 | 0.0562 | 0.0162 | 0.04178 | 264.187725 | |||
| Iteration history | |||||||||
| Iter | Calls | NegLogLike | Diff | MaxGrad | Slope | ||||
| 1 | 16 | 260.334592 | 3.853133 | 11.49504 | - 6.05858 | ||||
| 2 | 24 | 258.901004 | 1.433588 | 2.728152 | - 2.31961 | ||||
| 3 | 32 | 258.565145 | 0.335859 | 0.546435 | - 0.57772 | ||||
| 4 | 40 | 258.536421 | 0.028725 | 0.072913 | - 0.05392 | ||||
| 5 | 48 | 258.536111 | 0.00031 | 0.000997 | - 0.00061 | ||||
| 6 | 56 | 258.536111 | 4.428E-8 | 5.86E-8 | - 8.86E-8 | ||||
| NOTE: GCONV convergence criterion satisfied. | |||||||||
| Fit statistics | |||||||||
| -2 Log Likelihood | 517.1 | ||||||||
| AIC (smaller is better) | 529.1 | ||||||||
| AICC (smaller is better) | 529.2 | ||||||||
| BIC (smaller is better) | 550.6 | ||||||||
| Parameter estimates | |||||||||
| Parameter | Estimate | Standard Error | DF | t Value | Pr<|t| | Alpha | Lower | Upper | Gradient |
| beta0 | - 2.3458 | 0.3747 | 264 | - 6.26 | <.0001 | 0.05 | - 3.0837 | - 1.6080 | 2.342E-8 |
| beta1 | - 0.2187 | 0.2515 | 264 | - 0.87 | 0.3854 | 0.05 | - 0.7139 | 0.2765 | 9.256E-9 |
| beta2 | 4.0416 | 0.5053 | 264 | 8.00 | <.0001 | 0.05 | 3.0466 | 5.0365 | 5.153E-8 |
| beta3 | 0.06592 | 0.02039 | 264 | 3.23 | 0.0014 | 0.05 | 0.02577 | 0.1061 | - 5.69E-8 |
| beta4 | 0.02031 | 0.008921 | 264 | 2.28 | 0.0236 | 0.05 | 0.002743 | 0.03787 | - 3.92E-8 |
| s2u | 2.0291 | 0.9356 | 264 | 2.17 | 0.0310 | 0.05 | 0.1869 | 3.8713 | - 5.86E-8 |