Table 1

Study population characteristics

All (n = 1171)Cases (n = 43)Controls (n = 112)
Age, mean (SD)49.3 (11.1)53.9 (12.8)48.8 (11.2)
% female7.74.37.8
No. years in practice21.8 (11.3)26.8 (13.2)21.1 (11.7)
No. accidental Hg spills in office in past year0.5 (2.1)1.28 (2.5)0.1 (0.4)
% taking vitamins41.737.042.9