Table 7 Statistical results of second-level indicators identified under Delphi method
Second-level indicators | M | Standard deviation | Coefficient of variation | K | Q+-Q− | Cr |
|---|---|---|---|---|---|---|
1.1 Product display | 4.000 | 0.837 | 0.209 | 0.286 | 3 | 4.000 |
1.2 Technical information | 4.429 | 0.676 | 0.153 | 0.524 | 2 | 4.476 |
1.3 Technical solutions | 4.476 | 0.750 | 0.167 | 0.571 | 3 | 4.405 |
1.4 Requirement Demonstration | 4.190 | 1.030 | 0.246 | 0.476 | 4 | 4.000 |
1.5 Sales system | 3.143 | 0.573 | 0.182 | 0.000 | 2 | 3.119 |
1.6 New technology promotion | 3.571 | 0.926 | 0.259 | 0.143 | 3 | 3.571 |
2.1 Configuration project | 4.619 | 0.740 | 0.160 | 0.714 | 3 | 4.405 |
2.2 Timeliness of arrival | 4.381 | 0.590 | 0.135 | 0.429 | 2 | 4.476 |
2.3 Installation manual | 4.476 | 0.680 | 0.152 | 0.571 | 2 | 4.429 |
2.4 Device installation | 4.857 | 0.359 | 0.074 | 0.857 | 1 | 4.524 |
2.5 Equipment commissioning and quality control | 4.667 | 0.730 | 0.156 | 0.810 | 2 | 4.500 |
2.6 Equipment acceptance | 4.810 | 0.402 | 0.084 | 0.810 | 1 | 4.643 |
2.7 Data protocol | 4.190 | 0.873 | 0.208 | 0.476 | 2 | 4.048 |
2.8 Primary operational training | 4.667 | 0.577 | 0.124 | 0.714 | 2 | 4.429 |
3.1 Maintenance system | 4.571 | 0.598 | 0.131 | 0.619 | 2 | 4.714 |
3.2 Post-sales service personnel | 4.571 | 0.746 | 0.163 | 0.714 | 2 | 4.500 |
3.3 Complaint handling | 4.048 | 0.973 | 0.241 | 0.333 | 4 | 4.167 |
3.4 Adverse event monitoring | 4.190 | 0.750 | 0.179 | 0.381 | 2 | 4.214 |
3.5 Product recall | 4.000 | 0.949 | 0.237 | 0.381 | 3 | 3.952 |
3.6 Maintenance and use manual | 4.714 | 0.644 | 0.137 | 0.810 | 2 | 4.429 |
3.7 Maintenance response | 4.810 | 0.402 | 0.084 | 0.810 | 1 | 4.619 |
3.8 Maintenance accessories | 4.714 | 0.463 | 0.098 | 0.714 | 1 | 4.619 |
3.9 Standby machine | 4.381 | 0.669 | 0.153 | 0.476 | 2 | 4.405 |
3.10 Warranty contract | 4.619 | 0.498 | 0.108 | 0.619 | 1 | 4.619 |
3.11 Maintenance and repair report | 4.476 | 0.750 | 0.167 | 0.571 | 3 | 4.524 |
3.12 Retraining of clinical operations | 4.238 | 0.831 | 0.196 | 0.476 | 2 | 4.214 |
3.13 Retraining in clinical application | 4.286 | 0.784 | 0.183 | 0.476 | 2 | 4.119 |
3.14 Technical support | 4.333 | 0.658 | 0.152 | 0.429 | 2 | 4.238 |
3.15 Scientific research cooperation | 3.714 | 1.102 | 0.297 | 0.286 | 4 | 3.976 |
3.16 Maintenance quality | 4.619 | 0.498 | 0.108 | 0.619 | 1 | 4.619 |