Table 1.
Baseline Examined and Follow-up Examined Participants by Gender, Baseline Age, and Education
| Gender
|
Baseline Age (Yrs)
|
Education
|
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | Female | 35–49 | 50–64 | 65–79 | 80+ | None | Less than Primary | Primary | Secondary | High School or More | No Information | All | |
| Shunyi | |||||||||||||
| Baseline* | 1103 | 1317 | 783 | 1088 | 472 | 77 | 357 | 153 | 441 | 1206 | 261 | 2 | 2420 |
| Follow-up | 889 | 1114 | 663 | 937 | 364 | 39 | 248 | 121 | 369 | 1036 | 228 | 1 | 2003 |
| % Examined at FU | 80.6 | 84.6 | 84.7 | 86.1 | 77.1 | 50.7 | 69.5 | 79.1 | 83.7 | 85.9 | 87.4 | 50.0 | 82.8 |
| Guangzhou | |||||||||||||
| Baseline | 836 | 981 | 803 | 645 | 292 | 77 | 30 | 64 | 134 | 388 | 1113 | 88 | 1817 |
| Follow-up | 720 | 874 | 694 | 590 | 256 | 54 | 25 | 57 | 126 | 344 | 973 | 69 | 1594 |
| % Examined at FU | 86.1 | 89.1 | 86.4 | 91.5 | 87.7 | 70.1 | 83.3 | 89.1 | 94.0 | 88.7 | 87.4 | 78.4 | 87.7 |
| Kaski | |||||||||||||
| Baseline | 810 | 1347 | 860 | 766 | 437 | 94 | 1396 | 179 | 262 | 79 | 217 | 24 | 2157 |
| Follow-up | 605 | 1057 | 636 | 638 | 337 | 51 | 1071 | 144 | 207 | 57 | 166 | 17 | 1662 |
| % Examined at FU | 74.7 | 78.5 | 74.0 | 83.3 | 77.1 | 54.3 | 76.7 | 80.5 | 79.0 | 72.2 | 76.5 | 70.8 | 77.1 |
| Madurai | |||||||||||||
| Baseline | 1068 | 1562 | 1334 | 819 | 425 | 52 | 1262 | 478 | 467 | 278 | 143 | 2 | 2630 |
| Follow-up | 914 | 1388 | 1224 | 724 | 327 | 27 | 1096 | 408 | 419 | 251 | 128 | 0 | 2302 |
| % Examined at FU | 85.6 | 88.9 | 91.8 | 88.4 | 77.0 | 51.9 | 86.9 | 85.4 | 89.7 | 90.3 | 89.5 | 0.0 | 87.5 |
| Durban | |||||||||||||
| Baseline | 483 | 1456 | 836 | 776 | 293 | 34 | 111 | 645 | 513 | 251 | 144 | 275 | 1939 |
| Follow-up | 250 | 865 | 451 | 473 | 170 | 21 | 57 | 403 | 291 | 163 | 80 | 121 | 1115 |
| % Examined at FU | 51.8 | 59.4 | 54.0 | 61.0 | 58.0 | 61.8 | 51.4 | 62.5 | 56.7 | 64.9 | 55.6 | 44.0 | 57.5 |
| Dosso | |||||||||||||
| Baseline | 771 | 1274 | 1141 | 594 | 241 | 69 | 1352 | 231 | 210 | 171 | 74 | 7 | 2045 |
| Follow-up | 545 | 953 | 822 | 463 | 172 | 41 | 1008 | 168 | 160 | 112 | 46 | 4 | 1498 |
| % Examined at FU | 70.7 | 74.8 | 72.0 | 78.0 | 71.4 | 59.4 | 74.6 | 72.7 | 76.2 | 65.5 | 62.2 | 57.1 | 73.3 |
| Los Angeles | |||||||||||||
| Baseline | 232 | 431 | 192 | 273 | 168 | 30 | 22 | 111 | 152 | 109 | 250 | 19 | 663 |
| Follow-up | 136 | 243 | 103 | 152 | 109 | 15 | 9 | 60 | 92 | 61 | 149 | 8 | 379 |
| % Examined at FU | 58.6 | 56.4 | 53.7 | 55.7 | 64.9 | 50.0 | 40.9 | 54.1 | 60.5 | 56.0 | 59.6 | 42.1 | 57.2 |
| All Sites | |||||||||||||
| Baseline | 5303 | 8368 | 5949 | 4961 | 2328 | 433 | 4530 | 1861 | 2179 | 2482 | 2202 | 417 | 13,671 |
| Follow-up | 4059 | 6494 | 4593 | 3977 | 1735 | 248 | 3514 | 1361 | 1664 | 2024 | 1770 | 220 | 10,553 |
| % Examined at FU | 76.5 | 77.6 | 77.2 | 80.2 | 74.5 | 57.3 | 77.6 | 73.1 | 76.4 | 81.6 | 80.4 | 52.8 | 77.2 |
FU = follow-up.
*
Does not include 2 clusters (with 1134 baseline participants) that were not part of the follow-up study.