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Summary of tools used in existing work applying Six Sigma to hospitals' discharge process.
| Tools used | Case studies | |||
|---|---|---|---|---|
| Allen et al. [26] | Udayai and Kumar [8] | El-Banna [28] | Vijay [29] | |
| Process maps | 1 | 1 | 1 | |
| Time study | 1 | 1 | ||
| Brainstorming | 1 | |||
| Checklist | 1 | 1 | ||
| Control charts | ||||
| Individual moving range (IMR) | 1 | 1 | ||
| Root cause analysis | ||||
| Cause-and-effect (C & E) matrix | 1 | |||
| C & E diagram | 1 | 1 | ||
| 5 why? | 1 | |||
| Brainstorming | 1 | |||
| Pareto | 1 | |||
| Simulation | 1 | |||
| Sigma quality level (SQL) | 1 | |||
| Design of experiment (DOE) | 1 | |||
