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Abbreviations for different combinations of working correlation structure and variance estimator used in GEE analyses.
| Variance estimator | Working correlation structure | |||
|---|---|---|---|---|
| independence | exchangeable | kinship | unstructured | |
| Sandwich | ind-san | exch-san | kin-san | unst |
| One-step jackknife | ind-j1s | exch-j1s | kin-j1s | - |
| Fully-iterated jackknife | ind-fij | exch-fij | kin-fij | - |
