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Factors associated with risk of attrition among the online participants in the extended phase
| Model E: | ||
|---|---|---|
| Beta | Hazard ratio | |
| Age at baseline (per 10 years increase) | −0.11 | 0.89 |
| Had to be reminded to fill in the first online questionnaire (L) | ||
| Yes | 1.44 | 4.20 |
| No | Reference | |
Variables were selected using the least absolute shrinkage and selection operator method in Cox regression
