Table 1 Background information (mean, standard deviation) for cases and controls
| Â | Cases (128) | Controls (253) |
|---|---|---|
Age(yrs) | 64.3(± 9.0) | 64.4(± 9.6) |
Education (yrs) | 12.1(± 3.0) | 12.4(± 3.3) |
Height(cm) | 172.7(± 7.1) | 173.7(± 7.3) |
Weight(kg) | 79.1(± 13.2) | 79.2(± 12.1) |
Daily tap water drinking volume (l) | 1.9(± 0.9) | 1.8(± 0.9) |
Total yrs. Public water | 56.3(± 17.3) | 60.2(± 15.3) |
% life at present water source | 88(± 1.8) | 91(± 1.1) |