Table 4.
Conditional logit results: Model 1 (unconstrained), Model 2 (raked and unconstrained), and Model 3 (montonicity imposed)
| Mean | Model 1 | Model 2 | Model 3 | |
|---|---|---|---|---|
| Coefficienta (robust SE) | Coefficienta (robust SE) | Coefficienta (robust SE) | ||
| Duration | Linear | 0.331 (0.013)*** | 0.345 (0.026)*** | 0.366 (0.023)*** |
| Pain × Durationa | 2 | 0.003 (0.007) | 0.014 (0.012) | 0 |
| 3 | − 0.020 (0.008)** | − 0.025 (0.018)*** | − 0.021 (0.015) | |
| 4 | − 0.060 (0.008)*** | − 0.062 (0.015)*** | − 0.072 (0.014)*** | |
| 5 | − 0.136 (0.007)*** | − 0.148 (0.015)*** | − 0.149 (0.014)*** | |
| Fatigue × Durationa | 2 | − 0.002 (0.007) | − 0.030 (0.013)** | − 0.020 (0.011) |
| 3 | − 0.021 (0.006)*** | − 0.038 (0.013)*** | − 0.028 (0.011)** | |
| 4 | − 0.040 (0.007)*** | − 0.048 (0.015)*** | − 0.053 (0.014)*** | |
| 5 | − 0.050 (0.007)*** | − 0.069 (0.013)*** | − 0.060 (0.012)*** | |
| Nausea × Durationa | 2 | − 0.032 (0.006)*** | − 0.036 (0.013)*** | − 0.036 (0.011)*** |
| 3 | − 0.044 (0.006)*** | − 0.047 (0.011)*** | − 0.055 (0.011)*** | |
| 4 | − 0.061 (0.006)*** | − 0.063 (0.013)*** | − 0.059 (0.012)*** | |
| 5 | − 0.089 (0.008)*** | − 0.103 (0.015)*** | − 0.109 (0.014)*** | |
| Sleep × Durationa | 2 | 0.020 (0.006)*** | 0.024 (0.012)** | 0 |
| 3 | 0.015 (0.007)** | 0.036 (0.015)** | 0 | |
| 4 | − 0.040 (0.006)*** | − 0.019 (0.013) | − 0.028 (0.008)*** | |
| 5 | − 0.006 (0.007) | 0.010 (0.015) | − 0.028 (0.008)*** | |
| Work × Durationa | 2 | − 0.009 (0.008) | − 0.026 (0.016) | − 0.021 (0.014) |
| 3 | − 0.014 (0.006)** | − 0.040 (0.016)** | − 0.033 (0.011)*** | |
| 4 | − 0.034 (0.007)*** | − 0.039 (0.013)*** | − 0.033 (0.011)*** | |
| 5 | − 0.076 (0.006)*** | − 0.088 (0.013)*** | − 0.085 (0.012)*** | |
| Support × Durationa | 2 | − 0.023 (0.007)*** | − 0.034 (0.012)*** | − 0.008 (0.008) |
| 3 | − 0.001 (0.006) | 0.009 (0.012)*** | − 0.008 (0.008) | |
| 4 | − 0.045 (0.006)*** | − 0.038 (0.013)*** | − 0.044 (0.012)*** | |
| 5 | − 0.067 (0.006)*** | − 0.064 (0.011)*** | − 0.072 (0.010)*** | |
| Sadness × Durationa | 2 | − 0.009 (0.007) | 0.001 (0.012) | 0 |
| 3 | − 0.035 (0.007)*** | − 0.050 (0.014)*** | − 0.047 (0.010)*** | |
| 4 | − 0.038 (0.006)*** | − 0.035 (0.013)*** | − 0.047 (0.010)*** | |
| 5 | − 0.058 (0.007)*** | − 0.069 (0.013)*** | − 0.068 (0.012)*** | |
| Worry my health will get worse × Durationa | 2 | − 0.031 (0.006)*** | − 0.046 (0.011)*** | − 0.035 (0.010)*** |
| 3 | − 0.019 (0.007)*** | − 0.021 (0.012) | − 0.035 (0.010)*** | |
| 4 | − 0.039 (0.007)*** | − 0.050 (0.014)*** | − 0.043 (0.011)*** | |
| 5 | − 0.049 (0.007)*** | − 0.033 (0.015)*** | − 0.043 (0.011)*** | |
| Log-likelihood | − 15,009.31 | − 14,602.54 | − 14,655.46 | |
| Parameters | 33 | 33 | 23 | |
| AIC | 30,084.62 | 29,271.07 | 29,540.03 | |
| BIC | 30,375.13 | 29,560.89 | 29,724.46 | |
aThe coefficient for each level of each dimension was estimated as the interaction of that level with duration
Levels of statistical significant: ***1%; **5%
AIC Akaike information criterion, BIC Bayesian information criterion