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The response rate of study participants in each follow-up examination
| 1st follow up examination | 2nd follow up examination | 3rd follow up examination | 4th follow up examination | 5th follow up examination | |
|---|---|---|---|---|---|
| Number of participants | 6232 | 6654 | 6701 | 6319 | 5725 |
| Cumulative number of individuals who experience death | 232 | 373 | 558 | 757 | 894 |
| Number of eligible participants | 10,136 | 9995 | 9810 | 9611 | 9474 |
| Response rate | 61.5 | 66.6 | 68.3 | 65.6 | 60.4 |
