Table 2.
Personnel-level characteristics, mean time per activity, and costs per personnel per randomization cluster
| Participant—Physician (mean n = 2) | Participant—Nurse/Radiation Technician (mean n = 2.67) | Coach—Physician (mean n = 4.33) | Coach—Nurse/Radiation Technician (mean n = 1.67) | |
|---|---|---|---|---|
| Characteristics | ||||
| Years in practice (median, IQR) | 12 (9.25–17.75) | 10.5 (2.5–20.5) | N/A**** | N/A**** |
| Time per activity | ||||
| Travel, (hours; mean (SD)) | 6.1 (2.1) | 5.4 (2.4) | 7.0 (6.8) | 13.0 (4.8) |
| Preparation (hours; mean (SD))** | 4.5*** | 4.5*** | 0.7 (0.3) | 0.9 (0.2) |
| In-person coaching (hours; mean (SD)) | 13.6 (0.08) | 13.6 (0.06) | 9.5 (3.4) | 12.0 (2.3) |
| Evaluation (hours; mean (SD)) | 0.5 (0.06) | 0.5 (0.06) | 0**** | 0**** |
| Total time (hours; mean (SD)) | 24.7 (2.2) | 24.0 (2.4) | 17.2 (9.7) | 25.9 (6.4) |
| Costs | ||||
| Variable costs | ||||
| Labor cost/hr (2019 dollars; mean (SD)) | $269 (30) | $70 (23) | $257 (15) | $75 (4) |
| Total labor cost (2019 dollars; mean (SD)) | $6652 (1028) | $1690 (574) | $4450 (2570) | $1952 (559) |
| Direct travel cost (2019 dollars; mean (SD)) | $982 (281) | $1096 (181) | $1142 (737) | $1783 (738) |
| Apportioned administrative cost (2019 dollars; mean (SD)) | $3683***** | $3683***** | N/A***** | N/A***** |
| Total variable cost (2019 dollars; mean (SD)) | $11,318 (1079) | $6469 (695) | $5593 (3193) | $3735 (1285) |
| Apportioned fixed cost (2019 dollars; mean (SD)) | $474***** | $474***** | N/A***** | N/A***** |
| Total cost (2019 dollars; mean (SD)) | $11,792 (1079) | $6943 (695) | $5593 (3193) | $3735 (1285) |
Abbreviations: SD, standard deviation; IQR, interquartile range
Mean time per activity and personnel-level costs are calculated as averages of the activities of a given coach/participant within a randomization cluster
**Learning time for participants, preparation time for coaches
***Based on reported estimates by key informants, applied to both physician and nurse/technologist roles, no SD reported
****Coaches did not participate in post-intervention evaluations or report years in practice
*****Fixed costs and administrative portion of variable costs were apportioned equally to participants only, as the target of the intervention. No SD reported