Table 2.
Validation of quality assessment tool of stem cell clinical trials by structural equation modeling.
| Quality attribute | Quality indicator | Estimate | Factor load | SE | z value | P value |
|---|---|---|---|---|---|---|
| Participant protection | Risk management and AE/SAE reporting plan | 1.000 | 1.000 | |||
|
| ||||||
| Scientific value | Clinical significance of the research question | 1.000 | 0.545 | |||
| Research design | 4.095 | 0.558 | 1.737 | 2.357 | 0.018∗ | |
|
| ||||||
| Quality control | Staffs/committees and definition of the roles | 1.000 | 0.902 | |||
| Data integrity | 0.885 | 0.645 | 0.22 | 4.018 | <0.001∗ | |
| Implementation quality control strategy | 1.904 | 0.759 | 0.398 | 4.781 | <0.001∗ | |
|
| ||||||
| Stem cell products | Material harvest standards and SOPs | 1.000 | 0.543 | |||
| Stem cell production standards and SOPs | 0.813 | 0.725 | 0.297 | 2.741 | 0.006∗ | |
| Product logistic and management plan | 0.854 | 0.676 | 0.32 | 2.67 | 0.008∗ | |
|
| ||||||
| Overall quality | ||||||
| Participant protection | 1.000 | 0.760 | ||||
| Scientific value | 0.172 | 0.953 | 0.064 | 2.716 | 0.007∗ | |
| Control strategy | 0.515 | 0.729 | 0.151 | 3.418 | 0.001∗ | |
| Stem cell products | 0.760 | 0.826 | 0.301 | 2.53 | 0.011∗ | |
SE: standard error; SOP: standard operation procedure; ∗P value < 0.05.