Table 2.
Adjusted Mortality Rates per 1,000 Person-years by Serum Potassium: NHANES I Augmentation Survey (1974–1975) to 1992 Follow-up
| Serum potassium (mmol/L) | ||||
|---|---|---|---|---|
| Cause | Low 2.7 to 3.7 (N = 477) | Medium 3.8 to 4.4 (N = 1,982) | High 4.5 to 5.4 (N = 377) | P Value* |
| All-cause | 12.0 (86) | 12.0 (377) | 17.0 (115) | .0002 |
| CVD | 6.5 (46) | 5.3 (170) | 8.1 (56) | .0001 |
| IHD | 4.2 (30) | 3.3 (107) | 5.1 (35) | .005 |
| Stroke | 0.5 (5) | 0.6 (18) | 1.5 (10) | .019 |
| Cancer | 2.4 (17) | 3.4 (108) | 3.9 (25) | NS |
CVD, total cardiovascular disease; IHD, ischemic heart disease. Numbers in parentheses are deaths.
*
P value for high vs medium. P value for low vs medium not significant.