Table 5 Attribute statistics of KANO model based on Better-Worse coefficients.
Indicator code | Indicator | SI | DSI | Final classification |
|---|---|---|---|---|
\({{SA}}_{1}\) | Disinfection status display | 0.41 | −0.25 | M |
\({{SA}}_{2}\) | Rapid temperature screening at entry | 0.64 | −0.31 | A |
\({{SA}}_{3}\) | Health code verification for boarding | 0.59 | −0.17 | A |
\({{SA}}_{4}\) | Contactless entry (e.g., QR code, facial recognition) | 0.72 | −0.19 | A |
\({{SA}}_{5}\) | Timely sanitation of stations/carriages | 0.87 | −0.87 | O |
\({{SA}}_{6}\) | Disinfectant dispensers in stations/carriages | 0.67 | −0.10 | A |
\({{SA}}_{7}\) | Mask detection alert systems | 0.52 | −0.19 | I |
\({{SA}}_{8}\) | Public health broadcast announcements | 0.37 | −0.08 | I |
\({{SA}}_{9}\) | On-site PPE vending machines | 0.65 | −0.18 | A |
\({{SA}}_{10}\) | Temporary medical assistance stations | 0.58 | −0.13 | A |
\({{SA}}_{11}\) | Advanced air filtration systems (e.g., fresh air, negative pressure) | 0.77 | −0.36 | O |
\({{SA}}_{12}\) | Station/carriage safety personnel deployment | 0.52 | −0.22 | I |
\({{SA}}_{13}\) | Emergency rescue equipment installation | 0.63 | −0.52 | O |
\({{SA}}_{14}\) | Compartment partition barriers | 0.43 | −0.10 | I |
\({{SA}}_{15}\) | Designated isolation compartments | 0.48 | −0.11 | I |
\({{SA}}_{16}\) | Passenger capacity control | 0.55 | −0.25 | I |
