Table 3.
Description of approaches used to measure and value implementation costs within the included papers
| Paper | Method (valuation) | ||
|---|---|---|---|
| First author, year, (reference) | Human | Things | Space |
| Afshar, 2019 [23] | Unclear (Bureau of Labor Statistics) | Unclear (market price) | ✗ |
| Agulnik, 2019 [24] | Unclear (actual salary) | Unclear (market price) | ✗ |
| Castellanos, 2013 [25] | Unclear (not reported) | ✗ | ✗ |
| Field, 2012 [26] | Activity diaries (Bureau of Labor Statistics) | ✗ | ✗ |
| Forrester, 2014 [27] | Unclear (Bureau of Labor Statistics) | ✗ | ✗ |
| Swart, 2020 [28] | Unclear (actual salary) | ✗ | ✗ |
| Vermeulen, 2014 [31] | Unclear (actual salary) | ✗ | ✗ |
| Westbrook, 2015 [29] | Activity diaries, interviews (actual salary) | Estimated over time horizon (market price) | Rental opportunity cost (market price) |
| Zimlichman, 2013 [30] | Unclear (Bureau of Labor Statistics) | ✗ | ✗ |
The humans, ‘things’ and space costing framework [20] was applied