| CFA | Confirmatory factor analyses |
| CFI | Comparative Fit Index |
| DIF | Differential item functioning |
| EFA | Exploratory factor analyses |
| EQ-5D | EuroQol 5 Dimensions |
| KMO | Kaiser–Meyer–Olkin |
| LTCQ | Long-Term Conditions Questionnaire |
| MinRes | Minimum residual |
| MSE | Outfit mean square |
| NCCDs | Non-communicable chronic diseases |
| PROMs | Patient-reported outcome measures |
| RMSEA | Root Mean Square Error of Approximation |
| SRMR | Standardized Root Mean Square Residual |
| TLI | Tucker–Lewis Index |
| WLSMV | Weighted Least Squares Mean and Variance adjusted |
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