Characteristics and distribution parameters of unpunctuality at selected times
| All punctual | Preintervention | After 1 month | After 6 months | After 12 months | |
|---|---|---|---|---|---|
| Minimum (min) | 0.0 | −60 | −60 | −58 | −56 |
| Maximum (min) | 0.0 | 40 | 33 | 18 | 2 |
| Mean (min) | 0.0 | −20.46 | −23.21 | −21.51 | −25.03 |
| STD | 0.0 | 17.91 | 15.85 | 15.17 | 13.15 |
| Observations | N/A | 143 | 169 | 108 | 69 |
| Portion early (%) | 0.0 | 90.38 | 92.02 | 94.12 | 95.71 |
| Ave earliness (min) | 0.0 | 24.06 | 26.35 | 25.70 | 26.18 |
| Portion tardy (%) | 0.0 | 7.69 | 7.36 | 4.41 | 1.48 |
| Ave tardiness (min) | 0.0 | 16.75 | 14.17 | 8.67 | 2.08 |
| α | 1.0 | 2.55 | 2.86 | 2.34 | 2.05 |
| β | 1.0 | 3.90 | 4.37 | 2.87 | 1.79 |
All punctual, scenario in which all patients arrive at the appointment time; Portion early, proportion of patients arriving earlier than the appointment time; Ave earliness, average gap between the appointment time and arrival time for patients who arrive early.