| Collaboration
with the PRC began in 1981 with the pilot study. The
baseline surveys were in 1983-84 in four populations of
men and women aged 35-54 in Beijing urban, Beijing rural,
Guangzhou urban, and Guangzhou rural. Over 10,000
participants were screened in this baseline survey. The
rescreen of these 10,0000 people was completed in 1987-88
and a mortality follow-up is currently underway. A second
rescreen began in 1993 and was completed in 1994, with
mortality follow-up ongoing annually. For both the
baseline and rescreen surveys, a subsample of 10% were
screened for dietary intake and urinary electrolytes. |
