| Variablea | Estimate | 85% CI | |
| Lower | Upper | ||
| STP | 0.254 | 0.001 | 0.487 |
| STC | −0.014 | −0.031 | 0.005 |
| SC | 0.065 | 0.024 | 0.094 |
| STH | −0.010 | −0.023 | 0.005 |