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Number of predictors and total gain per predictor category.
| Predictor category | Number of predictors | Total gain, % | ||
| Germany | US | Germany | US | |
| Case data-based predictors | 48 | 62 | 72.9 | 87.7 |
| Self-reported medical conditions | 43 | 44 | 9.6 | 3.7 |
| Other predictors | 7 | 15 | 17.5 | 8.7 |
| Total | 98 | 121 | 100 | 100 |
