Table 1.
Sample selection and size, by country
| Site | Baseline | Lost | Follow-up | ||||||
| Int. | MC | Dementia (% of baseline int.) | N | (% of baseline N) | Int. | Deceased (% of follow-up int.) | Dementia (% of follow-up int.) | Censored (% of follow-up int.) | |
| Cuba | 2944 | 13 | 313 (10.63%) | 2618 | 327 (12.4%) | 2291 | 433 (18.9%) | 182 (7.94%) | 1676 (73.15%) |
| Dominican Rep. | 2011 | 3 | 235 (11.68%) | 1773 | 335 (18.89%) | 1438 | 323 (22.46%) | 165 (11.47%) | 950 (66.07%) |
| Peru | 1933 | 9 | 162 (8.38%) | 1762 | 444 (25.19%) | 1318 | 101 (7.66%) | 77 (5.84%) | 1140 (86.50%) |
| Venezuela | 1965 | 61 | 109 (5.55%) | 1795 | 467 (26.02%) | 1328 | 139 (10.47%) | 151 (11.37%) | 1038 (78.16%) |
| Mexico | 2003 | 0 | 171 (8.53%) | 1832 | 311 (16.97%) | 1521 | 157 (10.32%) | 130 (8.55%) | 1234 (81.13%) |
| China | 2162 | 0 | 137 (6.34%) | 2025 | 193 (9.53%) | 1832 | 380 (20.74%) | 207 (11.29%) | 1245 (67.97%) |
| India | 2004 | 3 | 181 (9.03%) | 1820 | – | – | – | – | – |
| Puerto Rico | 2009 | 7 | 233 (11.59%) | 1769 | 399 (22.56%) | 1370 | 170 (12.40%) | 153 (11.17%) | 1047 (76.43%) |
| Total | 17031 | 96 | 1541 (9.05%) | 15394 | 2476 (16.08%) | 11098 | 1703 (15.34%) | 1065 (9.60%) | 8330 (75.06%) |
Int., number of participants interviewed; MC, missing COPD data; N, total number of participants available at baseline; Lost, number of participants lost between baseline and follow-up. India is excluded from follow-up due to lack of robust dementia information. Urban and rural populations are pooled to maximize sample size for subsequent analyses.