| Distribution parameters | Estimate ± SE, d | |
|---|---|---|
| Mean | 431.80 ± 28.79 | |
| SD | 1.6117 ± 0.195 | |
| Covariates† | OR (95% CI) | p value |
| Substance use | 1.49 (1.144−1.937) | 0.02§ |
| Age | 1.00 (0.998−1.004) | 0.8 |
| BMI, kg/m2 | ||
| 40–49 | 0.93 (0.834−1.030) | 0.05 |
| 50–59 | 0.95 (0.849−1.070) | 0.3 |
| 60+ | 0.93 (0.808−1.073) | 0.06 |
| Male | 1.09 (1.005−1.175) | 0.08 |
| Log, distance | 0.98 (0.962−1.050) | 0.07 |
| Operational Period 2‡ | 1.28 (1.194−1.370) | < 0.001§ |
Note: BMI = body mass index, CI = confidence interval, OR = odds ratio. *Parametric time-to-event regression with log-normal hazards. Dependent variable was time-to-surgery. Patients who did not undergo bariatric surgery were censored at their last assessment date. Patients who did not attend orientation were excluded from the analysis. †Baseline covariate values: female, no substance use, 19 years of age, BMI between 35 and 39 kg/m2, lived within a few kilometres of the bariatric centre, and referred or attended orientation in Period 1. ‡Binary variable indicating if a patient attended orientation in Period 2. §p < 0.05 was considered statistically significant.