| Age, mean (SD) | 46.5 (11.5) | 35.6 (10.8) | .022* |
| BUN, mean (SD) | 16.7 (5.5) | 16.0 (3.5) | .649 |
| Creatinine, mean (SD) | 1.0 (0.1) | 1.0 (0.2) | .644 |
| Bladder volume, mean (SD) | 184.8 (78.8) | 15.3 (22.2) | .000† |
| Male sex | 5 (83.3) | 33 (55.0) | .230 |
| White race | 6 (100) | 52 (86.7) | .923 |
| Difficulty urinating‡ | | | .588 |
| None/never | 3 (50.0) | 47 (77.0) | |
| Rarely | 1 (16.7) | 4 (6.6) | |
| Occasionally | 1 (16.7) | 4 (6.6) | |
| Frequently | 1 (16.7) | 4 (6.6) | |
| Urinary incontinence during the day | | | .589 |
| None/never | 5 (50.0) | 43 (71.7) | |
| Rarely | 1 (33.3) | 9 (15.0) | |
| Occasionally | 0 (16.7) | 7 (11.7) | |
| Frequently | 0 | 1 (1.7) | |
| Urinary incontinence during the night | | | .795 |
| None/never | 5 (83.3) | 45 (75.0) | |
| Rarely | 1 (16.7) | 11 (18.3) | |
| Occasionally | 0 | 4 (6.7) | |
| Frequently | 0 | 0 | |
| Urinary frequency | | | .003† |
| None/never | 1 (16.7) | 41 (68.3) | |
| Rarely | 1 (16.7) | 10 (16.7) | |
| Occasionally | 0 | 6 (10.0) | |
| Frequently | 4 (67.0) | 3 (5.0) | |
| Infrequent urination | | | .696 |
| None/never | 4 (66.7) | 32 (53.3) | |
| Rarely | 1 (16.7) | 8 (13.3) | |
| Occasionally | 0 | 12 (20.0) | |
| Frequently | 1 (16.7) | 8 (13.3) | |
| Abnormal pain | | | .209 |
| None/never | 4 (66.7) | 46 (76.7) | |
| Rarely | 1 (16.7) | 9 (15.0) | |
| Occasionally | 0 | 4 (6.7) | |
| Frequently | 1 (16.7) | 1 (1.7) | |
| Uncharacteristic mood changes | | | .956 |
| None/never | 4 (66.7) | 37 (61.7) | |
| Rarely | 1 (16.7) | 10 (16.7) | |
| Occasionally | 1 (16.7) | 10 (16.7) | |
| Frequently | 0 (16.7) | 3 (5.0) | |
| Uncharacteristic behavioral changes‡ | | | .899 |
| None/never | 3 (50.0) | 35 (58.3) | |
| Rarely | 1 (16.7) | 8 (13.3) | |
| Occasionally | 2 (33.3) | 12 (20.0) | |
| Frequently | 0 | 4 (6.7) | |
| Intelligibility by familiar others | | | .978 |
| None/never | 0 | 2 (3.3) | |
| Rarely | 0 | 1 (1.7) | |
| Occasionally | 1 (16.7) | 8 (13.3) | |
| Frequently | 5 (83.3) | 49 (81.7) | |
| Intelligibility by unfamiliar others | | | .117 |
| None/never | 1 (16.7) | 5 (8.3) | |
| Rarely | 3 (50.0) | 10 (16.7) | |
| Occasionally | 2 (33.3) | 21 (35.0) | |
| Frequently | 0 | 24 (40.0) | |
| Bladder infections | 0 | 1 (1.6) | 1.000 |
| Wears Depends | 0 | 4 (6.6) | 1.000 |
| History of bladder damage | 0 | 0 | NA |
| History of kidney damage | 0 | 0 | NA |