Table 2.
Urinary parameters of institutionalized and community-dwelling elderly people by sex.
| Urinary Parameters | Institutionalized (n = 29) | Community-dwelling (n = 74) | p-value | Total (n = 103) |
|---|---|---|---|---|
| Males | ||||
| 24-h urine volume, mL | 1750 (800, 2100) | 1835 (650, 3300) | 0.049 * | 1790 (650, 3300) |
| 24-h UOSM, mOsm/kg | 564 (391, 781) | 414 (225, 768) | 0.015 † | 462 (225, 781) |
| Renal solute excretion, mOsm/24-h | 880 (586, 1562) | 801 (499, 1262) | 0.195 * | 865 (499, 1562) |
| Free Water Reserve, mL/24-h | 134 (−537, 595) | 780 (−157, 1823) | <0.001 * | 461 (−537, 1823) |
| Females | ||||
| 24-h urine volume, mL | 1450 (750, 2800) | 1750 (760, 3450) | 0.927 * | 1625 (750, 3450) |
| 24-h UOSM, mOsm/kg | 380 (272, 620) | 377 (84, 799) | 0.129 * | 377 (84, 799) |
| Renal solute excretion, mOsm/24-h | 623 (257, 1056) | 619 (260, 1073) | 0.300 * | 621 (257, 1073) |
| Free Water Reserve, mL/24-h | 621 (−1, 1184) | 720 (−207, 2706) | 0.147 * | 706 (−207, 2706) |
Values are expressed as median (range); * t-test for independent samples; † Mann-Whitney U test; UOSM—Urine osmolality.