Table 3. Urinary sodium excretion in a sub-sample of the hypertensive group with 24 h urine volume ≥1000 ml: University of Pittsburgh Center for Healthy Aging, Key to Life Nutrition Program.
| Urinary Na excretion | Change from baseline (mmol/24 h) | |||||
|---|---|---|---|---|---|---|
|
|
|
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| Mean urine volume (ml/24 h) | mmol/24 h | mg/24 h | Mean | 95% CI | P value* | |
| Baseline (n 77) | 1956 | 140 | 3220 | |||
| 12 months (n 77) | 1985 | 125 | 2875 | −15 | 3·02, 27·76 | 0·02 |
*
P value calculated using a matched paired t test, indicating statistical significance of the change in urinary Na from baseline to each of the follow-up points.